Chemical and Bio-Molecular Physics
The research within Chemical and Molecular Physics address the fundamental properties and ultrafast processes in atoms, molecules, chemical systems, and proteins. With X-ray scattering and spectroscopy, we reveal how electrons and nuclei move and interact to explain how properties and function emerge.
The research in Chemical and Bio-molecular Physics addresses fundamental aspects in atomic, molecular, chemical, and biological systems. We develop and apply novel X-ray methods and instrumentation to reveal how transient electronic structures and nuclear dynamics determine properties and function. We use X-ray scattering and spectroscopy to understand and control the photophysics and photochemistry of atoms and molecules, aqueous solutions, metal complexes, and proteins. Our interdisciplinary research program is based on strong collaborations in experiment and theory and aims at applications in environmental, biophysical and the chemical sciences.
Research
Division and Partner Programme
The two research programmes Condensed Matter Physics and Chemical and Bio-Molecular Physics form the division of X-ray Photon Science and are at the forefront of X-ray methodology and instrumentation development.
The X-ray tools are used to bridge from fundamental molecular and condensed matter physics to applied and bio-chemical physics research, targeting energy and quatum materials associated with device physics.
Highly Cited Publications in X-ray Photon Science
Publications in the last 10 years with over 100 citations (Web of Science)
Record 1 of 43 |
Title: Maximizing and stabilizing luminescence from halide perovskites with potassium passivation |
Author(s): Abdi-Jalebi, M (Abdi-Jalebi, Mojtaba); Andaji-Garmaroudi, Z (Andaji-Garmaroudi, Zahra); Cacovich, S (Cacovich, Stefania); Stavrakas, C (Stavrakas, Camille); Philippe, B (Philippe, Bertrand); Richter, JM (Richter, Johannes M.); Alsari, M (Alsari, Mejd); Booker, EP (Booker, Edward P.); Hutter, EM (Hutter, Eline M.); Pearson, AJ (Pearson, Andrew J.); Lilliu, S (Lilliu, Samuele); Savenije, TJ (Savenije, Tom J.); Rensmo, H (Rensmo, Hakan); Divitini, G (Divitini, Giorgio); Ducati, C (Ducati, Caterina); Friend, RH (Friend, Richard H.); Stranks, SD (Stranks, Samuel D.) |
Source: NATURE Volume: 555 Issue: 7697 Pages: 497-+ DOI: https://doi.org/10.1038/nature25989 Published Date: 2018 MAR 22 |
Times Cited in Web of Science Core Collection: 1340 |
Total Times Cited: 1417 |
Record 2 of 43 |
Title: Bismuth Based Hybrid Perovskites A3Bi2I9 (A: Methylammonium or Cesium) for Solar Cell Application |
Author(s): Park, BW (Park, Byung-Wook); Philippe, B (Philippe, Bertrand); Zhang, XL (Zhang, Xiaoliang); Rensmo, H (Rensmo, Hakan); Boschloo, G (Boschloo, Gerrit); Johansson, EMJ (Johansson, Erik M. J.) |
Source: ADVANCED MATERIALS Volume: 27 Issue: 43 Pages: 6806-+ DOI: https://doi.org/10.1002/adma.201501978 Published Date: 2015 NOV 18 |
Times Cited in Web of Science Core Collection: 1007 |
Total Times Cited: 1054 |
Record 3 of 43 |
Title: Charge-compensation in 3d-transition-metal-oxide intercalation cathodes through the generation of localized electron holes on oxygen |
Author(s): Luo, K (Luo, Kun); Roberts, MR (Roberts, Matthew R.); Hao, R (Hao, Rong); Guerrini, N (Guerrini, Niccolo); Pickup, DM (Pickup, David M.); Liu, YS (Liu, Yi-Sheng); Edström, K (Edstrom, Kristina); Guo, JH (Guo, Jinghua); Chadwick, AV (Chadwick, Alan V.); Duda, LC (Duda, Laurent C.); Bruce, PG (Bruce, Peter G.) |
Source: NATURE CHEMISTRY Volume: 8 Issue: 7 Pages: 684-691 DOI: https://doi.org/10.1038/NCHEM.2471 Published Date: 2016 JUL |
Times Cited in Web of Science Core Collection: 917 |
Total Times Cited: 974 |
Record 4 of 43 |
Title: Nickel-vanadium monolayer double hydroxide for efficient electrochemical water oxidation |
Author(s): Fan, K (Fan, Ke); Chen, H (Chen, Hong); Ji, YF (Ji, Yongfei); Huang, H (Huang, Hui); Claesson, PM (Claesson, Per Martin); Daniel, Q (Daniel, Quentin); Philippe, B (Philippe, Bertrand); Rensmo, H (Rensmo, Hakan); Li, FS (Li, Fusheng); Luo, Y (Luo, Yi); Sun, LC (Sun, Licheng) |
Source: NATURE COMMUNICATIONS Volume: 7 Article Number: 11981 DOI: https://doi.org/10.1038/ncomms11981 Published Date: 2016 JUN |
Times Cited in Web of Science Core Collection: 858 |
Total Times Cited: 880 |
Record 5 of 43 |
Title: Unreacted PbI2 as a Double-Edged Sword for Enhancing the Performance of Perovskite Solar Cells |
Author(s): Jacobsson, TJ (Jacobsson, T. Jesper); Correa-Baena, JP (Correa-Baena, Juan-Pablo); Anaraki, EH (Anaraki, Elham Halvani); Philippe, B (Philippe, Bertrand); Stranks, SD (Stranks, Samuel D.); Bouduban, MEF (Bouduban, Marine E. F.); Tress, W (Tress, Wolfgang); Schenk, K (Schenk, Kurt); Teuscher, J (Teuscher, Joel); Moser, JE (Moser, Jacques-E.); Rensmo, H (Rensmo, Hakan); Hagfeldt, A (Hagfeldt, Anders) |
Source: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Volume: 138 Issue: 32 Pages: 10331-10343 DOI: https://doi.org/10.1021/jacs.6b06320 Published Date: 2016 AUG 17 |
Times Cited in Web of Science Core Collection: 700 |
Total Times Cited: 747 |
Record 6 of 43 |
Title: Water at Interfaces |
Author(s): Björneholm, O (Bjornehohn, O.); Hansen, MH (Hansen, Martin H.); Hodgson, A (Hodgson, Andrew); Liu, LM (Liu, Li-Min); Limmer, DT (Limmer, David T.); Michaelides, A (Michaelides, Angelos); Pedevilla, P (Pedevilla, Philipp); Rossmeisl, J (Rossmeisl, Jan); Shen, H (Shen, Huaze); Tocci, G (Tocci, Gabriele); Tyrode, E (Tyrode, Eric); Walz, MM (Walz, Marie-Madeleine); Werner, J (Werner, Josephina); Bluhm, H (Bluhm, Hendrik) |
Source: CHEMICAL REVIEWS Volume: 116 Issue: 13 Pages: 7698-7726 DOI: https://doi.org/10.1021/acs.chemrev.6b00045 Published Date: 2016 JUL 13 |
Times Cited in Web of Science Core Collection: 545 |
Total Times Cited: 593 |
Record 7 of 43 |
Title: Improved Performance of the Silicon Anode for Li-Ion Batteries: Understanding the Surface Modification Mechanism of Fluoroethylene Carbonate as an Effective Electrolyte Additive |
Author(s): Xu, C (Xu, Chao); Lindgren, F (Lindgren, Fredrik); Philippe, B (Philippe, Bertrand); Gorgoi, M (Gorgoi, Mihaela); Björefors, F (Bjorefors, Fredrik); Edström, K (Edstrom, Kristina); Gustafsson, T (Gustafsson, Torbjorn) |
Source: CHEMISTRY OF MATERIALS Volume: 27 Issue: 7 Pages: 2591-2599 DOI: https://doi.org/10.1021/acs.chemmater.5b00339 Published Date: 2015 APR 14 |
Times Cited in Web of Science Core Collection: 511 |
Total Times Cited: 553 |
Record 8 of 43 |
Title: Oxygen redox chemistry without excess alkali-metal ions in Na2/3[Mg0.28Mn0.72]O2 |
Author(s): Maitra, U (Maitra, Urmimala); House, RA (House, Robert A.); Somerville, J (Somerville, JamesW.); Tapia-Ruiz, N (Tapia-Ruiz, Nuria); Lozano, JG (Lozano, Juan G.); Guerrini, N (Guerrini, Niccolo); Hao, R (Hao, Rong); Luo, K (Luo, Kun); Jin, LY (Jin, Liyu); Pérez-Osorio, MA (Perez-Osorio, Miguel A.); Massel, F (Massel, Felix); Pickup, DM (Pickup, David M.); Ramos, S (Ramos, Silvia); Lu, XY (Lu, Xingye); McNally, DE (McNally, Daniel E.); Chadwick, AV (Chadwick, Alan V.); Giustino, F (Giustino, Feliciano); Schmitt, T (Schmitt, Thorsten); Duda, LC (Duda, Laurent C.); Roberts, MR (Roberts, Matthew R.); Bruce, PG (Bruce, Peter G.) |
Source: NATURE CHEMISTRY Volume: 10 Issue: 3 Pages: 288-295 DOI: https://doi.org/10.1038/NCHEM.2923 Published Date: 2018 MAR |
Times Cited in Web of Science Core Collection: 425 |
Total Times Cited: 442 |
Record 9 of 43 |
Title: Electronic Structure of TiO2/CH3NH3Pbl3 Perovskite Solar Cell Interfaces |
Author(s): Lindblad, R (Lindblad, Rebecka); Bi, DQ (Bi, Dongqin); Park, BW (Park, Byung-wook); Oscarsson, J (Oscarsson, Johan); Gorgoi, M (Gorgoi, Mihaela); Siegbahn, H (Siegbahn, Hans); Odelius, M (Odelius, Michael); Johansson, EMJ (Johansson, Erik M. J.); Rensmo, H (Rensmo, Hakan) |
Source: JOURNAL OF PHYSICAL CHEMISTRY LETTERS Volume: 5 Issue: 4 Pages: 648-653 DOI: https://doi.org/10.1021/jz402749f Published Date: 2014 FEB 20 |
Times Cited in Web of Science Core Collection: 423 |
Total Times Cited: 442 |
Record 10 of 43 |
Title: Chemical and Electronic Structure Characterization of Lead Halide Perovskites and Stability Behavior under Different Exposures-A Photoelectron Spectroscopy Investigation |
Author(s): Philippe, B (Philippe, Bertrand); Park, BW (Park, Byung-Wook); Lindblad, R (Lindblad, Rebecka); Oscarsson, J (Oscarsson, Johan); Ahmadi, S (Ahmadi, Sareh); Johansson, EMJ (Johansson, Erik M. J.); Rensmo, H (Rensmo, Hakan) |
Source: CHEMISTRY OF MATERIALS Volume: 27 Issue: 5 Pages: 1720-1731 DOI: https://doi.org/10.1021/acs.chemmater.5b00348 Published Date: 2015 MAR 10 |
Times Cited in Web of Science Core Collection: 372 |
Total Times Cited: 408 |
Record 11 of 43 |
Title: Electronic Properties of Meso-Superstructured and Planar Organometal Halide Perovskite Films: Charge Trapping, Photodoping, and Carrier Mobility |
Author(s): Leijtens, T (Leijtens, Tomas); Stranks, SD (Stranks, Samuel D.); Eperon, GE (Eperon, Giles E.); Lindblad, R (Lindblad, Rebecka); Johansson, EMJ (Johansson, Erik M. J.); McPherson, IJ (McPherson, Ian J.); Rensmo, H (Rensmo, Hakan); Ball, JM (Ball, James M.); Lee, MM (Lee, Michael M.); Snaith, HJ (Snaith, Henry J.) |
Source: ACS NANO Volume: 8 Issue: 7 Pages: 7147-7155 DOI: https://doi.org/10.1021/nn502115k Published Date: 2014 JUL |
Times Cited in Web of Science Core Collection: 364 |
Total Times Cited: 394 |
Record 12 of 43 |
Title: Origin of the Substitution Mechanism for the Binding of Organic Ligands on the Surface of CsPbBr3 Perovskite Nanocubes |
Author(s): Ravi, VK (Ravi, Vikash Kumar); Santra, PK (Santra, Pralay K.); Joshi, N (Joshi, Niharika); Chugh, J (Chugh, Jeetender); Singh, SK (Singh, Sachin Kumar); Rensmo, H (Rensmo, Hakan); Ghosh, P (Ghosh, Prasenjit); Nag, A (Nag, Angshuman) |
Source: JOURNAL OF PHYSICAL CHEMISTRY LETTERS Volume: 8 Issue: 20 Pages: 4988-4994 DOI: https://doi.org/10.1021/acs.jpclett.7b02192 Published Date: 2017 OCT 19 |
Times Cited in Web of Science Core Collection: 301 |
Total Times Cited: 322 |
Record 13 of 43 |
Title: Ultra-low magnetic damping of a metallic ferromagnet |
Author(s): Schoen, MAW (Schoen, Martin A. W.); Thonig, D (Thonig, Danny); Schneider, ML (Schneider, Michael L.); Silva, TJ (Silva, T. J.); Nembach, HT (Nembach, Hans T.); Eriksson, O (Eriksson, Olle); Karis, O (Karis, Olof); Shaw, JM (Shaw, Justin M.) |
Source: NATURE PHYSICS Volume: 12 Issue: 9 Pages: 839-842 DOI: https://doi.org/10.1038/nphys3770 Published Date: 2016 SEP |
Times Cited in Web of Science Core Collection: 280 |
Total Times Cited: 307 |
Record 14 of 43 |
Title: Anion Redox Chemistry in the Cobalt Free 3d Transition Metal Oxide Intercalation Electrode Li[Li0.2Ni0.2Mn0.6]O2 |
Author(s): Luo, K (Luo, Kun); Roberts, MR (Roberts, Matthew R.); Guerrini, N (Guerrini, Niccolo); Tapia-Ruiz, N (Tapia-Ruiz, Nuria); Hao, R (Hao, Rong); Massel, F (Massel, Felix); Pickup, DM (Pickup, David M.); Ramos, S (Ramos, Silvia); Liu, YS (Liu, Yi-Sheng); Guo, JH (Guo, Jinghua); Chadwick, AV (Chadwick, Alan V.); Duda, LC (Duda, Laurent C.); Bruce, PG (Bruce, Peter G.) |
Source: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Volume: 138 Issue: 35 Pages: 11211-11218 DOI: https://doi.org/10.1021/jacs.6b05111 Published Date: 2016 SEP 7 |
Times Cited in Web of Science Core Collection: 272 |
Total Times Cited: 291 |
Record 15 of 43 |
Title: Recent Advances in Oxidation Stable Chemistry of 2D MXenes |
Author(s): Cao, FC (Cao, Fangcheng); Zhang, Y (Zhang, Ye); Wang, HQ (Wang, Hongqing); Khan, K (Khan, Karim); Tareen, AK (Tareen, Ayesha Khan); Qian, WJ (Qian, Wenjing); Zhang, H (Zhang, Han); Ågren, H (Agren, Hans) |
Source: ADVANCED MATERIALS Volume: 34 Issue: 13 Article Number: 2107554 DOI: https://doi.org/10.1002/adma.202107554 Early Access Date: FEB 2022 Published Date: 2022 APR |
Times Cited in Web of Science Core Collection: 239 |
Total Times Cited: 245 |
Record 16 of 43 |
Title: X-Ray Diffraction from Isolated and Strongly Aligned Gas-Phase Molecules with a Free-Electron Laser |
Author(s): Küpper, J (Kuepper, Jochen); Stern, S (Stern, Stephan); Holmegaard, L (Holmegaard, Lotte); Filsinger, F (Filsinger, Frank); Rouzee, A (Rouzee, Arnaud); Rudenko, A (Rudenko, Artem); Johnsson, P (Johnsson, Per); Martin, AV (Martin, Andrew V.); Adolph, M (Adolph, Marcus); Aquila, A (Aquila, Andrew); Bajt, S (Bajt, Sasa); Barty, A (Barty, Anton); Bostedt, C (Bostedt, Christoph); Bozek, J (Bozek, John); Caleman, C (Caleman, Carl); Coffee, R (Coffee, Ryan); Coppola, N (Coppola, Nicola); Delmas, T (Delmas, Tjark); Epp, S (Epp, Sascha); Erk, B (Erk, Benjamin); Foucar, L (Foucar, Lutz); Gorkhover, T (Gorkhover, Tais); Gumprecht, L (Gumprecht, Lars); Hartmann, A (Hartmann, Andreas); Hartmann, R (Hartmann, Robert); Hauser, G (Hauser, Guenter); Holl, P (Holl, Peter); Hömke, A (Hoemke, Andre); Kimmel, N (Kimmel, Nils); Krasniqi, F (Krasniqi, Faton); Kühnel, KU (Kuehnel, Kai-Uwe); Maurer, J (Maurer, Jochen); Messerschmidt, M (Messerschmidt, Marc); Moshammer, R (Moshammer, Robert); Reich, C (Reich, Christian); Rudek, B (Rudek, Benedikt); Santra, R (Santra, Robin); Schlichting, I (Schlichting, Ilme); Schmidt, C (Schmidt, Carlo); Schorb, S (Schorb, Sebastian); Schulz, J (Schulz, Joachim); Soltau, H (Soltau, Heike); Spence, JCH (Spence, John C. H.); Starodub, D (Starodub, Dmitri); Strüder, L (Strueder, Lothar); Thogersen, J (Thogersen, Jan); Vrakking, MJJ (Vrakking, Marc J. J.); Weidenspointner, G (Weidenspointner, Georg); White, TA (White, Thomas A.); Wunderer, C (Wunderer, Cornelia); Meijer, G (Meijer, Gerard); Ullrich, J (Ullrich, Joachim); Stapelfeldt, H (Stapelfeldt, Henrik); Rolles, D (Rolles, Daniel); Chapman, HN (Chapman, Henry N.) |
Source: PHYSICAL REVIEW LETTERS Volume: 112 Issue: 8 Article Number: 083002 DOI: https://doi.org/10.1103/PhysRevLett.112.083002 Published Date: 2014 FEB 28 |
Times Cited in Web of Science Core Collection: 207 |
Total Times Cited: 221 |
Record 17 of 43 |
Title: Applications of Few-Layer Nb2C MXene: Narrow-Band Photodetectors and Femtosecond Mode-Locked Fiber Lasers |
Author(s): Gao, LF (Gao, Lingfeng); Ma, CY (Ma, Chunyang); Wei, SR (Wei, Songrui); Kuklin, AV (Kuklin, Artem, V); Zhang, H (Zhang, Han); Ågren, H (Agren, Hans) |
Source: ACS NANO Volume: 15 Issue: 1 Pages: 954-965 DOI: https://doi.org/10.1021/acsnano.0c07608 Early Access Date: JAN 2021 Published Date: 2021 JAN 26 |
Times Cited in Web of Science Core Collection: 200 |
Total Times Cited: 205 |
Record 18 of 43 |
Title: Hetero-MXenes: Theory, Synthesis, and Emerging Applications |
Author(s): Gao, LF (Gao, Lingfeng); Bao, WL (Bao, Wenli); Kuklin, A (Kuklin, Artem, V); Mei, S (Mei, Shan); Zhang, H (Zhang, Han); Ågren, H (Agren, Hans) |
Source: ADVANCED MATERIALS Volume: 33 Issue: 10 Article Number: 2004129 DOI: https://doi.org/10.1002/adma.202004129 Early Access Date: JAN 2021 Published Date: 2021 MAR |
Times Cited in Web of Science Core Collection: 180 |
Total Times Cited: 185 |
Record 19 of 43 |
Title: Chemical Distribution of Multiple Cation (Rb+, Cs+, MA+, and FA+) Perovskite Materials by Photoelectron Spectroscopy |
Author(s): Philippe, B (Philippe, Bertrand); Saliba, M (Saliba, Michael); Correa-Baena, JP (Correa-Baena, Juan-Pablo); Cappel, UB (Cappel, Ute B.); Turren-Cruz, SH (Turren-Cruz, Silver-Hamill); Grätzel, M (Gratzel, Michael); Hagfeldt, A (Hagfeldt, Anders); Rensmo, H (Rensmo, Hakan) |
Source: CHEMISTRY OF MATERIALS Volume: 29 Issue: 8 Pages: 3589-3596 DOI: https://doi.org/10.1021/acs.chemmater.7b00126 Published Date: 2017 APR 25 |
Times Cited in Web of Science Core Collection: 170 |
Total Times Cited: 181 |
Record 20 of 43 |
Title: An effective approach of vapour assisted morphological tailoring for reducing metal defect sites in lead-free, (CH3NH3)3Bi2I9 bismuth-based perovskite solar cells for improved performance and long-term stability |
Author(s): Jain, SM (Jain, Sagar M.); Phuyal, D (Phuyal, Dibya); Davies, ML (Davies, Matthew L.); Li, M (Li, Meng); Philippe, B (Philippe, Bertrand); De Castro, C (De Castro, Catherine); Qiu, Z (Qiu, Zhen); Kim, J (Kim, Jinhyun); Watson, T (Watson, Trystan); Tsoi, WC (Tsoi, Wing Chung); Karis, O (Karis, Olof); Rensmo, H (Rensmo, Hakan); Boschloo, G (Boschloo, Gerrit); Edvinsson, T (Edvinsson, Tomas); Durrant, JR (Durrant, James R.) |
Source: NANO ENERGY Volume: 49 Pages: 614-624 DOI: https://doi.org/10.1016/j.nanoen.2018.05.003 Published Date: 2018 JUL |
Times Cited in Web of Science Core Collection: 168 |
Total Times Cited: 174 |
Record 21 of 43 |
Title: Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox |
Author(s): House, RA (House, Robert A.); Jin, LY (Jin, Liyu); Maitra, U (Maitra, Urmimala); Tsuruta, K (Tsuruta, Kazuki); Somerville, JW (Somerville, James W.); Förstermann, DP (Forstermann, Dominic P.); Massel, F (Massel, Felix); Duda, L (Duda, Laurent); Roberts, MR (Roberts, Matthew R.); Bruce, PG (Bruce, Peter G.) |
Source: ENERGY & ENVIRONMENTAL SCIENCE Volume: 11 Issue: 4 Pages: 926-932 DOI: https://doi.org/10.1039/c7ee03195e Published Date: 2018 APR 1 |
Times Cited in Web of Science Core Collection: 161 |
Total Times Cited: 175 |
Record 22 of 43 |
Title: Diffraction before destruction |
Author(s): Chapman, HN (Chapman, Henry N.); Caleman, C (Caleman, Carl); Timneanu, N (Timneanu, Nicusor) |
Source: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES Volume: 369 Issue: 1647 Article Number: 20130313 DOI: https://doi.org/10.1098/rstb.2013.0313 Published Date: 2014 JUL 17 |
Times Cited in Web of Science Core Collection: 152 |
Total Times Cited: 162 |
Record 23 of 43 |
Title: What Triggers Oxygen Loss in Oxygen Redox Cathode Materials? |
Author(s): House, RA (House, Robert A.); Maitra, U (Maitra, Urmimala); Jin, LY (Jin, Liyu); Lozano, JG (Lozano, Juan G.); Somerville, JW (Somerville, James W.); Rees, NH (Rees, Nicholas H.); Naylor, AJ (Naylor, Andrew J.); Duda, LC (Duda, Laurent C.); Massel, F (Massel, Felix); Chadwick, AV (Chadwick, Alan V.); Ramos, S (Ramos, Silvia); Pickup, DM (Pickup, David M.); McNally, DE (McNally, Daniel E.); Lu, XY (Lu, Xingye); Schmitt, T (Schmitt, Thorsten); Roberts, MR (Roberts, Matthew R.); Bruce, PG (Bruce, Peter G.) |
Source: CHEMISTRY OF MATERIALS Volume: 31 Issue: 9 Pages: 3293-3300 DOI: https://doi.org/10.1021/acs.chemmater.9b00227 Published Date: 2019 MAY 14 |
Times Cited in Web of Science Core Collection: 150 |
Total Times Cited: 159 |
Record 24 of 43 |
Title: Inorganic CsPbI3 Perovskite Coating on PbS Quantum Dot for Highly Efficient and Stable Infrared Light Converting Solar Cells |
Author(s): Zhang, XL (Zhang, Xiaoliang); Zhang, JD (Zhang, Jindan); Phuyal, D (Phuyal, Dibya); Du, J (Du, Juan); Tian, L (Tian, Lei); Öberg, VA (Oberg, Viktor A.); Johansson, MB (Johansson, Malin B.); Cappel, UB (Cappel, Ute B.); Karis, O (Karis, Olof); Liu, JH (Liu, Jianhua); Rensmo, H (Rensmo, Hakan); Boschloo, G (Boschloo, Gerrit); Johansson, EMJ (Johansson, Erik M. J.) |
Source: ADVANCED ENERGY MATERIALS Volume: 8 Issue: 6 Article Number: 1702049 DOI: https://doi.org/10.1002/aenm.201702049 Published Date: 2018 FEB 26 |
Times Cited in Web of Science Core Collection: 148 |
Total Times Cited: 155 |
Record 25 of 43 |
Title: Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption |
Author(s): Wolf, TJA (Wolf, T. J. A.); Myhre, RH (Myhre, R. H.); Cryan, JP (Cryan, J. P.); Coriani, S (Coriani, S.); Squibb, RJ (Squibb, R. J.); Battistoni, A (Battistoni, A.); Berrah, N (Berrah, N.); Bostedt, C (Bostedt, C.); Bucksbaum, P (Bucksbaum, P.); Coslovich, G (Coslovich, G.); Feifel, R (Feifel, R.); Gaffney, KJ (Gaffney, K. J.); Grilj, J (Grilj, J.); Martinez, TJ (Martinez, T. J.); Miyabe, S (Miyabe, S.); Moeller, SP (Moeller, S. P.); Mucke, M (Mucke, M.); Natan, A (Natan, A.); Obaid, R (Obaid, R.); Osipov, T (Osipov, T.); Plekan, O (Plekan, O.); Wang, S (Wang, S.); Koch, H (Koch, H.); Gühr, M (Guehr, M.) |
Source: NATURE COMMUNICATIONS Volume: 8 Article Number: 29 DOI: https://doi.org/10.1038/s41467-017-00069-7 Published Date: 2017 JUN 22 |
Times Cited in Web of Science Core Collection: 148 |
Total Times Cited: 152 |
Record 26 of 43 |
Title: NIR-II Responsive Inorganic 2D Nanomaterials for Cancer Photothermal Therapy: Recent Advances and Future Challenges |
Author(s): An, D (An, Dong); Fu, JY (Fu, Jianye); Zhang, B (Zhang, Bin); Xie, N (Xie, Ni); Nie, GH (Nie, Guohui); Ågren, H (Agren, Hans); Qiu, M (Qiu, Meng); Zhang, H (Zhang, Han) |
Source: ADVANCED FUNCTIONAL MATERIALS Volume: 31 Issue: 32 Article Number: 2101625 DOI: https://doi.org/10.1002/adfm.202101625 Early Access Date: JUN 2021 Published Date: 2021 AUG |
Times Cited in Web of Science Core Collection: 147 |
Total Times Cited: 151 |
Record 27 of 43 |
Title: Ultrafast X-ray Auger probing of photoexcited molecular dynamics |
Author(s): McFarland, BK (McFarland, B. K.); Farrell, JP (Farrell, J. P.); Miyabe, S (Miyabe, S.); Tarantelli, F (Tarantelli, F.); Aguilar, A (Aguilar, A.); Berrah, N (Berrah, N.); Bostedt, C (Bostedt, C.); Bozek, JD (Bozek, J. D.); Bucksbaum, PH (Bucksbaum, P. H.); Castagna, JC (Castagna, J. C.); Coffee, RN (Coffee, R. N.); Cryan, JP (Cryan, J. P.); Fang, L (Fang, L.); Feifel, R (Feifel, R.); Gaffney, KJ (Gaffney, K. J.); Glownia, JM (Glownia, J. M.); Martinez, TJ (Martinez, T. J.); Mucke, M (Mucke, M.); Murphy, B (Murphy, B.); Natan, A (Natan, A.); Osipov, T (Osipov, T.); Petrovic, VS (Petrovic, V. S.); Schorb, S (Schorb, S.); Schultz, T (Schultz, Th.); Spector, LS (Spector, L. S.); Swiggers, M (Swiggers, M.); Tenney, I (Tenney, I.); Wang, S (Wang, S.); White, JL (White, J. L.); White, W (White, W.); Gühr, M (Guehr, M.) |
Source: NATURE COMMUNICATIONS Volume: 5 Article Number: 4235 DOI: https://doi.org/10.1038/ncomms5235 Published Date: 2014 JUN |
Times Cited in Web of Science Core Collection: 136 |
Total Times Cited: 142 |
Record 28 of 43 |
Title: Electronic Structure of CH3NH3PbX3 Perovskites: Dependence on the Halide Moiety |
Author(s): Lindblad, R (Lindblad, Rebecka); Jena, NK (Jena, Naresh K.); Philippe, B (Philippe, Bertrand); Oscarsson, J (Oscarsson, Johan); Bi, DQ (Bi, Dongqin); Lindblad, A (Lindblad, Andreas); Mandal, S (Mandal, Suman); Pal, B (Pal, Banabir); Sarma, DD (Sarma, D. D.); Karis, O (Karis, Olof); Siegbahn, H (Siegbahn, Hans); Johansson, EMJ (Johansson, Erik M. J.); Odelius, M (Odelius, Michael); Rensmo, H (Rensmo, Hakan) |
Source: JOURNAL OF PHYSICAL CHEMISTRY C Volume: 119 Issue: 4 Pages: 1818-1825 DOI: https://doi.org/10.1021/jp509460h Published Date: 2015 JAN 29 |
Times Cited in Web of Science Core Collection: 128 |
Total Times Cited: 136 |
Record 29 of 43 |
Title: Potassium- and Rubidium-Passivated Alloyed Perovskite Films: Optoelectronic Properties and Moisture Stability |
Author(s): Abdi-Jalebi, M (Abdi-Jalebi, Mojtaba); Andaji-Garmaroudi, Z (Andaji-Garmaroudi, Zahra); Pearson, AJ (Pearson, Andrew J.); Divitini, G (Divitini, Giorgio); Cacovich, S (Cacovich, Stefania); Philippe, B (Philippe, Bertrand); Rensmo, H (Rensmo, Hakan); Ducati, C (Ducati, Caterina); Friend, RH (Friend, Richard H.); Stranks, SD (Stranks, Samuel D.) |
Source: ACS ENERGY LETTERS Volume: 3 Issue: 11 Pages: 2671-+ DOI: https://doi.org/10.1021/acsenergylett.8b01504 Published Date: 2018 NOV |
Times Cited in Web of Science Core Collection: 125 |
Total Times Cited: 130 |
Record 30 of 43 |
Title: Characterization techniques for dye-sensitized solar cells |
Author(s): Pazoki, M (Pazoki, Meysam); Cappel, UB (Cappel, Ute B.); Johansson, EMJ (Johansson, Erik M. J.); Hagfeldt, A (Hagfeldt, Anders); Boschloo, G (Boschloo, Gerrit) |
Source: ENERGY & ENVIRONMENTAL SCIENCE Volume: 10 Issue: 3 Pages: 672-709 DOI: https://doi.org/10.1039/c6ee02732f Published Date: 2017 MAR 1 |
Times Cited in Web of Science Core Collection: 125 |
Total Times Cited: 128 |
Record 31 of 43 |
Title: From Graphene Nanoribbons on Cu(111) to Nanographene on Cu(110): Critical Role of Substrate Structure in the Bottom-Up Fabrication Strategy |
Author(s): Simonov, KA (Simonov, Konstantin A.); Vinogradov, NA (Vinogradov, Nikolay A.); Vinogradov, AS (Vinogradov, Alexander S.); Generalov, AV (Generalov, Alexander V.); Zagrebina, EM (Zagrebina, Elena M.); Svirskiy, GI (Svirskiy, Gleb I.); Cafolla, AA (Cafolla, Attilio A.); Carpy, T (Carpy, Thomas); Cunniffe, JP (Cunniffe, John P.); Taketsugu, T (Taketsugu, Tetsuya); Lyalin, A (Lyalin, Andrey); Mårtensson, N (Martensson, Nils); Preobrajenski, AB (Preobrajenski, Alexei B.) |
Source: ACS NANO Volume: 9 Issue: 9 Pages: 8997-9011 DOI: https://doi.org/10.1021/acsnano.5b03280 Published Date: 2015 SEP |
Times Cited in Web of Science Core Collection: 121 |
Total Times Cited: 132 |
Record 32 of 43 |
Title: Enhanced Crystallinity in Organic-Inorganic Lead Halide Perovskites on Mesoporous TiO2 via Disorder-Order Phase Transition |
Author(s): Park, BW (Park, Byung-wook); Philippe, B (Philippe, Bertrand); Gustafsson, T (Gustafsson, Torbjorn); Sveinbjörnsson, K (Sveinbjornsson, Kari); Hagfeldt, A (Hagfeldt, Anders); Johansson, EMJ (Johansson, Erik M. J.); Boschloo, G (Boschloo, Gerrit) |
Source: CHEMISTRY OF MATERIALS Volume: 26 Issue: 15 Pages: 4466-4471 DOI: https://doi.org/10.1021/cm501541p Published Date: 2014 AUG 12 |
Times Cited in Web of Science Core Collection: 119 |
Total Times Cited: 141 |
Record 33 of 43 |
Title: Highly Efficient Flexible Quantum Dot Solar Cells with Improved Electron Extraction Using MgZnO Nanocrystals |
Author(s): Zhang, XL (Zhang, Xiaoliang); Santra, PK (Santra, Pralay Kanti); Tian, L (Tian, Lei); Johansson, MB (Johansson, Malin B.); Rensmo, H (Rensmo, Hakan); Johansson, EMJ (Johansson, Erik M. J.) |
Source: ACS NANO Volume: 11 Issue: 8 Pages: 8478-8487 DOI: https://doi.org/10.1021/acsnano.7b04332 Published Date: 2017 AUG |
Times Cited in Web of Science Core Collection: 109 |
Total Times Cited: 112 |
Record 34 of 43 |
Title: Photoelectron Spectroscopy for Lithium Battery Interface Studies |
Author(s): Philippe, B (Philippe, B.); Hahlin, M (Hahlin, M.); Edström, K (Edstrom, K.); Gustafsson, T (Gustafsson, T.); Siegbahn, H (Siegbahn, H.); Rensmo, H (Rensmo, H.) |
Source: JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 163 Issue: 2 Pages: A178-A191 DOI: https://doi.org/10.1149/2.0051602jes Published Date: 2016 |
Times Cited in Web of Science Core Collection: 106 |
Total Times Cited: 113 |
Record 35 of 43 |
Title: Two-dimensional van der Waals spinterfaces and magnetic-interfaces |
Author(s): Dayen, JF (Dayen, Jean-Francois); Ray, SJ (Ray, Soumya J.); Karis, O (Karis, Olof); Vera-Marun, IJ (Vera-Marun, Ivan J.); Kamalakar, MV (Kamalakar, M. Venkata) |
Source: APPLIED PHYSICS REVIEWS Volume: 7 Issue: 1 DOI: https://doi.org/10.1063/1.5112171 Published Date: 2020 MAR |
Times Cited in Web of Science Core Collection: 105 |
Total Times Cited: 115 |
Record 36 of 43 |
Title: Indications of radiation damage in ferredoxin microcrystals using high-intensity X-FEL beams |
Author(s): Nass, K (Nass, Karol); Foucar, L (Foucar, Lutz); Barends, TRM (Barends, Thomas R. M.); Hartmann, E (Hartmann, Elisabeth); Botha, S (Botha, Sabine); Shoeman, RL (Shoeman, Robert L.); Doak, RB (Doak, R. Bruce); Alonso-Mori, R (Alonso-Mori, Roberto); Aquila, A (Aquila, Andrew); Bajt, S (Bajt, Sasa); Barty, A (Barty, Anton); Bean, R (Bean, Richard); Beyerlein, KR (Beyerlein, Kenneth R.); Bublitz, M (Bublitz, Maike); Drachmann, N (Drachmann, Nikolaj); Gregersen, J (Gregersen, Jonas); Jönsson, HO (Joensson, H. Olof); Kabsch, W (Kabsch, Wolfgang); Kassemeyer, S (Kassemeyer, Stephan); Koglin, JE (Koglin, Jason E.); Krumrey, M (Krumrey, Michael); Mattle, D (Mattle, Daniel); Messerschmidt, M (Messerschmidt, Marc); Nissen, P (Nissen, Poul); Reinhard, L (Reinhard, Linda); Sitsel, O (Sitsel, Oleg); Sokaras, D (Sokaras, Dimosthenis); Williams, GJ (Williams, Garth J.); Hau-Riege, S (Hau-Riege, Stefan); Timneanu, N (Timneanu, Nicusor); Caleman, C (Caleman, Carl); Chapman, HN (Chapman, Henry N.); Boutet, S (Boutet, Sebastien); Schlichting, I (Schlichting, Ilme) |
Source: JOURNAL OF SYNCHROTRON RADIATION Volume: 22 Special Issue: SI Pages: 225-238 DOI: https://doi.org/10.1107/S1600577515002349 Published Date: 2015 MAR Part: 2 |
Times Cited in Web of Science Core Collection: 104 |
Total Times Cited: 110 |
Record 37 of 43 |
Title: Effect of Substrate Chemistry on the Bottom-Up Fabrication of Graphene Nanoribbons: Combined Core-Level Spectroscopy and STM Study |
Author(s): Simonov, KA (Simonov, Konstantin A.); Vinogradov, NA (Vinogradov, Nikolay A.); Vinogradov, AS (Vinogradov, Alexander S.); Generalov, AV (Generalov, Alexander V.); Zagrebina, EM (Zagrebina, Elena M.); Mårtensson, N (Martensson, Nils); Cafolla, AA (Cafolla, Attilio A.); Carpy, T (Carpy, Tomas); Cunniffe, JP (Cunniffe, John P.); Preobrajenski, AB (Preobrajenski, Alexei B.) |
Source: JOURNAL OF PHYSICAL CHEMISTRY C Volume: 118 Issue: 23 Pages: 12532-12540 DOI: https://doi.org/10.1021/jp502215m Published Date: 2014 JUN 12 |
Times Cited in Web of Science Core Collection: 103 |
Total Times Cited: 113 |
Record 38 of 43 |
Title: Valence Level Character in a Mixed Perovskite Material and Determination of the Valence Band Maximum from Photoelectron Spectroscopy: Variation with Photon Energy |
Author(s): Philippe, B (Philippe, Bertrand); Jacobsson, TJ (Jacobsson, T. Jesper); Correa-Baena, JP (Correa-Baena, Juan-Pablo); Jena, NK (Jena, Naresh K.); Banerjee, A (Banerjee, Amitava); Chakraborty, S (Chakraborty, Sudip); Cappel, UB (Cappel, Ute B.); Ahuja, R (Ahuja, Rajeev); Hagfeldt, A (Hagfeldt, Anders); Odelius, M (Odelius, Michael); Rensmo, H (Rensmo, Hakan) |
Source: JOURNAL OF PHYSICAL CHEMISTRY C Volume: 121 Issue: 48 Pages: 26655-26666 DOI: https://doi.org/10.1021/acs.jpcc.7b08948 Published Date: 2017 DEC 7 |
Times Cited in Web of Science Core Collection: 99 |
Total Times Cited: 106 |
Record 39 of 43 |
Title: Degradation Mechanism of Silver Metal Deposited on Lead Halide Perovskites |
Author(s): Svanström, S (Svanstrom, Sebastian); Jacobsson, TJ (Jacobsson, T. Jesper); Boschloo, G (Boschloo, Gerrit); Johansson, EMJ (Johansson, Erik M. J.); Rensmo, H (Rensmo, Hakan); Cappel, UB (Cappel, Ute B.) |
Source: ACS APPLIED MATERIALS & INTERFACES Volume: 12 Issue: 6 Pages: 7212-7221 DOI: https://doi.org/10.1021/acsami.9b20315 Published Date: 2020 FEB 12 |
Times Cited in Web of Science Core Collection: 97 |
Total Times Cited: 102 |
Record 40 of 43 |
Title: Vapor phase conversion of PbI2 to CH3NH3PbI3: spectroscopic evidence for formation of an intermediate phase |
Author(s): Jain, SM (Jain, Sagar Motilal); Philippe, B (Philippe, Bertrand); Johansson, EMJ (Johansson, Erik M. J.); Park, BW (Park, Byung-Wook); Rensmo, H (Rensmo, Hakan); Edvinsson, T (Edvinsson, Tomas); Boschloo, G (Boschloo, Gerrit) |
Source: JOURNAL OF MATERIALS CHEMISTRY A Volume: 4 Issue: 7 Pages: 2630-2642 DOI: https://doi.org/10.1039/c5ta08745g Published Date: 2016 |
Times Cited in Web of Science Core Collection: 97 |
Total Times Cited: 107 |
Record 41 of 43 |
Title: Dedoping of Lead Halide Perovskites Incorporating Monovalent Cations |
Author(s): Abdi-Jalebi, M (Abdi-Jalebi, Mojtaba); Pazoki, M (Pazoki, Meysam); Philippe, B (Philippe, Bertrand); Dar, MI (Dar, M. Ibrahim); Alsari, M (Alsari, Mejd); Sadhanala, A (Sadhanala, Aditya); Diyitini, G (Diyitini, Giorgio); Imani, R (Imani, Roghayeh); Lilliu, S (Lilliu, Samuele); Kullgren, J (Kullgren, Jolla); Rensmo, H (Rensmo, Hakan); Grätzel, M (Gratzel, Michael); Friend, RH (Friend, Richard H.) |
Source: ACS NANO Volume: 12 Issue: 7 Pages: 7301-7311 DOI: https://doi.org/10.1021/acsnano.8b03586 Published Date: 2018 JUL |
Times Cited in Web of Science Core Collection: 95 |
Total Times Cited: 102 |
Record 42 of 43 |
Title: Investigation of the Electrode/Electrolyte Interface of Fe2O3 Composite Electrodes: Li vs Na Batteries |
Author(s): Philippe, B (Philippe, Bertrand); Valvo, M (Valvo, Mario); Lindgren, F (Lindgren, Fredrik); Rensmo, H (Rensmo, Hakan); Edström, K (Edstrom, Kristina) |
Source: CHEMISTRY OF MATERIALS Volume: 26 Issue: 17 Pages: 5028-5041 DOI: https://doi.org/10.1021/cm5021367 Published Date: 2014 SEP 9 |
Times Cited in Web of Science Core Collection: 95 |
Total Times Cited: 104 |
Record 43 of 43 |
Title: Chemical engineering of methylammonium lead iodide/bromide perovskites: tuning of opto-electronic properties and photovoltaic performance |
Author(s): Park, BW (Park, Byung-wook); Philippe, B (Philippe, Bertrand); Jain, SM (Jain, Sagar M.); Zhang, XL (Zhang, Xiaoliang); Edvinsson, T (Edvinsson, Tomas); Rensmo, H (Rensmo, Hakan); Zietz, B (Zietz, Burkhard); Boschloo, G (Boschloo, Gerrit) |
Source: JOURNAL OF MATERIALS CHEMISTRY A Volume: 3 Issue: 43 Pages: 21760-21771 DOI: https://doi.org/10.1039/c5ta05470b Published Date: 2015 |
Times Cited in Web of Science Core Collection: 94 |
Total Times Cited: 105 |
Student Projects in X-ray Photon Science
Eco-friendly Defect Passivation in 2D Semiconducting Materials
Since the 2010 Nobel Prize in Physics, related to the monolayer two-dimensional (2D) material graphene, the interest in similar materials has grown markedly. The discovery of 2D semiconducting materials based on transition metal dichalcogenides (TMDs), with the chemical structure MX2 (M=Mo, W; X=S, Se, Te), has opened up new interesting possibilities in optoelectronic devices, since they possess excellent properties well suited for optoelectronic applications, like high extinction coefficients due to the strong excitonic effects, exceptional mechanical properties, as well as chemical and thermal stability, to highlight a few. In this project, we will develop eco-friendly chemical treatments to passivate the defects of 2D material, investigate the effect with photoluminescence and Raman measurements, and charge transport measurements. We will also develop the mechanistic picture for the defect passivation with X-ray spectroscopy.
Contacts
Using X-ray imaging to determine structures of guest proteins inside a host crystal
Imaging techniques such as X-ray crystallography are used routinely to determine the structure of biomolecules. These methods take advantage of repeating units that form a crystal to obtain strong diffraction signals. Crystallization of certain proteins presents a challenge in the field and host crystals with solvent channels could be employed to obtain the crystallographic arrangement of a guest molecule in these situations. The guest molecule diffuses into the solvent channel during or after the host crystal formation. The project aims to assess the effect of location of the guest protein inside a host protein crystal, how the translation or orientation of the guest biomolecule affects the resulting diffraction signal.
Contacts
Seeing the making and breaking of chemical bonds with X-ray spectroscopy
Molecular bond breaking and bond formation are at the heart of molecular transformations. Understanding how to manipulate chemical bonds by breaking and making them in small and unreactive molecules such as in methane or carbon dioxide is of utmost importance for sustainable societies. This fundamental challenge in catalysis research is the basis for functionalizing the unreactive molecules into valuable compounds such as methanol. In our group, we perform time-resolved X-ray spectroscopic experiments at large-scale facilities like X-ray synchrotrons and X-ray lasers to follow such chemical reactions in real time of molecular transformations. In this project, we will investigate how specific homogeneous transition-metal catalysts mediate molecular transformations of small molecules. We will investigate how orbital interactions evolve on the relevant timescales from femtoseconds to microseconds and how they help breaking and making molecular bonds.
Contacts
Simulating fundamental processes in chemical reactions
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Theoretical modelling of a chemical reactions often offers a unique way of understanding the fundamental properties that drive it. Most chemical reactions can be simply understood in terms of changes of electronic configuration and motions of nuclei. Computational studies involving quantum-chemical approaches hence have a very high degree of success in giving new and comprehensive insight. In our group, we focus on finding new ways to use time-resolved X-ray spectroscopy to understand chemical reactions at the level of atoms and electrons and for interpretation of the X-ray spectra we use quantum-chemical simulations. In this project we will simulate the time-resolved X-ray spectroscopic signatures for the photo-initiated dynamics in transition-metal complexes at the TDDFT, ROCIS and RASSCF level of theory. Furthermore, excited state molecular dynamics and reactivity simulations of such photochemical processes will also be explored. We will learn what it is that drives the reaction with the aim to find rules for how to best convert sunlight into new molecules.
Contacts
Atmospheric Chemistry
We are interested in revealing molecular scale processes influencing the climate. The main subject of our investigations in this field are aerosols. These are particles with a wide range of diameters immersed in gas. Aerosols are released into the atmosphere in large amounts from e.g. vegetation, dust, combustion engines or sea spray. Thus, aerosols play an important role in atmospheric science since they impact the climate in various ways. On one hand they scatter sunlight as well as infrared radiation from the earth’s surface, they act as seeds for cloud condensation and they facilitate chemical reactions at their surface. All these aspects happen on a big scale in the atmosphere and are complex. Many methods nowadays used in atmospheric science do not deliver molecular-level information and thus our knowledge about processes in aerosol particles on the microscopic level is still limited. We utilize photoelectron spectroscopy to aerosol particles to obtain molecular level information about selected aspects of aerosols and thus contribute to an overall understanding of their impact on the climate.
Our experiments are usually conducted at the synchrotron light sources SOLEIL (Paris, France), BESSY II (Berlin, Germany), SIRIUS (Campinas, Brazil) and MAX IV (Lund, Sweden). The teams working on these projects consist of researchers with various skills and cultural backgrounds to cover as many aspects as possible of such a broad subject. Therefore, interested students should be open to acquire knowledge from various scientific fields during the project work and ideally have a background in chemistry, physics or a related field.
Contact
Fundamental Processes in Liquids
Our research addresses questions that are at the very basis of e.g. atmospheric chemistry, biophysics and our renewable energy related projects. This work focusses on intermolecular interactions in liquids (e.g. hydrogen bonds in water) and how they react to changes of the system like the solution of salts or varying temperatures. We aim to understand how such changes take effect on the molecular level and the tool for our investigation is photoelectron spectroscopy. This technique allows us to obtain spacial and temporal information about our samples. Thus we can investigate the surface propensity of solutes in a liquid or investigate dynamics on a femtosecond timescale. Since we strive for a holistic understanding, we also combine our experiments with investigations on clusters or molecules in the gas phase.
Our experiments usually take place at the synchrotron light sources SOLEIL, Paris (France), BESSY, Berlin (Germany), MAX IV, Lund (Sweden) or LNLS / SIRIUS, Campinas (Brazil). During the experiments we work closely together with scientists from other institutions with diverse scientific backgrounds.
Interested students ideally have a background in chemistry, physics or a related subject and should be open to acquire knowledge from other scientific fields since our projects often use methods from physics applied to questions motivated from chemistry.
Contact
Biophysics and Biochemistry
Our group addresses how biological processes work on the molecular scale and we employ photoelectron spectroscopy to obtain the desired, molecular-level information. Currently, we are working on two main topics:
- Radiation-induced damage to biologically relevant molecules
- The surface propensity of organic molecules in aqueous solutions
Radiation-induced damage
Whenever we travel in high altitude (e.g. flying in a plane) or receive an X-ray of the skeleton, we are subjected to radiation induced damage. If high-energy photons interact with matter they can trigger a multitude of reactions we currently lack detailed knowledge of. Consider two cases: A photon hits a biomolecule directly and ionizes it. The molecule may either dissociate directly or undergoes further relaxation and then breaks apart. Which of the two cases takes place? That is determined by which molecular level has been initially ionized and the structure of the molecule. However, we are currently not able to predict precisely which parameters favour one over the other process and that’s what our research focusses on.
Surface propensity of molecules
The biological relevance of the second aspect of our research, the surface propensity of biomolecules, becomes apparent when considering all the interfaces between aqueous solutions and e.g. protein surfaces or cell membranes in the body. We try to learn under which conditions ions and molecules are either repelled or drawn to these interfaces and what the driving forces for these dynamics are. By understanding these, we contribute to resolving questions about e.g. protein folding and the transfer of molecules through membranes. This aspect of our research is closely related to the fundamental properties of solutions, which is another one of our research topics.
We use synchrotron light sources in Europe and abroad for our experiments. The most commonly used synchrotron facilities by our group are SOLEIL (Paris, France), BESSY II (Berlin, Germany), MAX IV (Lund, Sweden) and SIRIUS (Campinas, Brazil). The research projects are carried out in collaboration with other researchers from all around the globe and with very different scientific backgrounds. Therefore, interested students should be open to acquire knowledge from other scientific fields but their own as part of the project work and should have a background in biology, chemistry, physics or a related field.
Contact
Catalysis and Renewable Energy
The earth receives more energy from the sun through radiation than we need – even in our energy-hungry technological society. Methods for harvesting this energy are in development but the efficient storage of the harvested energy is a major challenge. One obvious approach is to transform electrical energy into chemical energy e.g. by splitting water or carbon dioxide. In order to use these electrochemical reactions efficiently and on a large scale, we need cheap catalysts with high turnover rates and a long lifetime.
In order to develop the next generation of efficient and durable catalysts, our research group collaborates with other researchers from Uppsala University and the University of Sao Paulo (Brazil). We strive to obtain a molecular level understanding of the function of the catalysts and all the individual steps of the catalytic process. In order to achieve this we employ photoelectron spectroscopy to investigate catalysts. The sample environment during the investigation ranges from solid state samples, gaseous samples to complexes dissolved in water.
Our experiments are conducted at synchrotron light sources SOLEIL (Paris, France), BESSY II (Berlin, Germany), MAX IV (Lund, Sweden) and SIRIUS (Campinas, Brazil). The experimental teams are composed of researchers with varying professional and cultural background.
Interested students ideally have a background in chemistry, physics or a related field and should be open to acquire knowledge from other scientific areas since our projects reach across the borders of traditional scientific subjects.
Contact
Design, construction and implementation of a XUV-spectrometer for characterization and optimization of harmonic generation
Abstract
In this project you will be responsible for the design and construction of a grating based spectrometer in the XUV region. You will evaluate a couple of different design proposals, and based on your evaluation you will purchase the parts needed to construct the spectrometer. With our help you will then implement your solution in our existing experimental setup.
Contact
Molecular dynamics simulations of protein molecules in laser fields
Abstract
Simulation study of how the native atomic structure of a protein is affected as it is exposed to a laserfield. Lasers are used as optical tweezers and this study aims to understand how the electric field, the laser field, actually affects the protein structure. The project will involve learning how to use the molecular dynamics program GROMACS.
Contact
Validating water models for molecular modeling
Abstract
In molecular modeling water is often present in one way or another. There are over 50 different water models used by scientists when modeling different phenomena. This project is about comparing the physical and chemical properties of a subset of all the available models to decide which models that are good at what. The project will involve learning how to use the molecular dynamics program GROMACS and learning how to evaluate simulations.
Contact
RF-filtering and impedance matching for electron lenses used in time-of-flight spectroscopy
Abstract
We want to convert a scientific apparatus, running adequately with short X-ray pulses with a repetition rate of 1.25 MHz into an instrument that can handle the load from an X-ray source with much higher repetition rate having occasional “lone” pulses at 1.25 MHz. If you want to take part in this development (with first results already achieved) you should be ready to, together with us, develop, build and try out devices that minimizes the RF-interference due to oscillating electric fields inside our instrument.
Contact
Shockwaves in materials induced by an X-ray laser
Abstract
X-ray lasers are new types of lasers, which produce extremely intense and short X-ray pulses. In this project you will use computer simulations to study how shockwaves can be created in a material (e.g. metal) when it is hit by a focused laser beam and turns into a plasma. This will help us understand how the structure of the material changes and how to control such an extreme process.
Contact
Nanoscale Device Physics
Overall theme
Device physics forms the foundation for modern day electronic marvels. Understanding the charge and spin transport, their manipulation in new functional materials is key to the future electronic devices, energy and sensing applications. Nanoscale device Physics is an exciting area of research, where we fabricate nanoscale devices with innovative designs, through state-of-the-art nanofabrication techniques in cleanroom and perform charge/spin transport experiments to uncover the prospect of novel materials and their devices for future applications. The following is a brief outline of the current projects.
Novel graphene spintronic devices
Experimentally realized in 2004, graphene, a one atom thick crystal of carbon atoms placed in a honeycomb lattice, is a material with superlative properties and holds promise for next generation electronics. Spin of electrons, a quantum mechanical property, is responsible for magnetism in solids and forms the basis for an evolving field called ‘Spintronics’. Most successful existing applications of spintronics are the high capacity memory storage devices such as hard disks and MRAM. Research in spintronics is a way for future low power, faster electronic devices. Graphene is prime to spintronics, because it is the best known material for transporting spin information of electrons over long distances. It is anticipated to play a major role in the future of spin based devices in electronics. In this project, our aim is to investigate new spintronic devices of graphene with an aim to enhance their performance with novel device schemes like graphene devices on new substrates that have never been explored before.
Charge and spin transport in new 2D crystals
Two dimensional crystals (2D) are a new class of materials which show special properties for their confined geometry. These crystals are like atomic planes pulled out of bulk crystals having layered structure (stacks of 2D crystals). Graphene, an atomically thin semi-metal is one such crystal that is widely studied and reported in the last decade. In addition, there are semiconducting crystals such as MoS2, WS2, Black Phosphorus which are promising for future transistors, insulating crystals such as h-BN, Fluorographene promising for substrates and tunnel barrier applications, and there are other crystals with exotic properties like topological insulators such as Bi2Se3, Bi2Te3 etc. The number of materials in the 2D crystal library is increasing continuously, making the field a lot to be explored. In this project, going beyond the existing crystals, we will investigate the charge and spin transport in new/emerging 2D crystals that show long term promise for applications in nanoelectronics and spintronics.
Magnetic domain wall based devices
A magnetic domain wall separates two domains (regions in space having different directions of magnetic moment) of magnetization in a magnetic material. In the past decade a significant understanding has been developed about the manipulation of domain walls using charge or spin current and their prospect for memory and logic applications. It is now possible to engineer magnetic nanostructures with specific magnetic orientation and domain walls, which can be further manipulated by external magnetic, electrical or optical stimulus. In spite of previous developments, there is plenty of room for new developments that can form the basis for newer technologies. In this project, our aim would be to engineer magnetic nanowires with domain walls, image the domain walls using Magnetic force microscopy and manipulate them using charge and pure spin currents. The nanowires will be fabricated using the state of the art e-beam lithography technique at the Ångström Microstructure Laboratory, which will be followed by the said experiments. In the next step such magnetic structures will be integrated with non-magnetic spin current carriers such as aluminum or graphene nanowires in pursuit of novel spintronic devices.
Contact
Molecular dynamics of organic molecules on water surfaces
Abstract
The behavior of small organic molecules on water surfaces is important for atmospheric chemistry. Molecules that show surface preference have a larger possibility to interact with the surrounding atmosphere. We have studied how small organic molecules such as carboxylic acids and alcohols behave in a water/gas interphase both experimentally and using molecular dynamics. This project is focused on doing a simulation study of how the structure of different organic molecules affect the molecules surface preference. Simulations will be done using the molecular dynamics package GROMACS and will be strongly connected to experimental results from studies at synchrotron sources such as MAXlab.
Contact
High-resolution imaging of single particles using X-ray Free Electron Lasers by reducing the background scattering of gases
Structure solution from single particles such as proteins is the holy grail of structural biology. This was one of the goals in mind during the development of X-ray free electron lasers (XFELs). XFELs with their intense brilliance and pulse length on femtosecond scale mean a paradigm shift for structural biology.
Image source: Henry Chapman, CFEL. Science, 2007, 316, 1444-48.
So far high-resolution single particle imaging (SPI) has not been achieved. Compared to other methods, SPI suffers from low signal intensity, which is determined by the sample properties and the XFEL parameters. In order to improve the signal to noise ratio the sample environment must be improved. With our current setup, an electrospray aerosolizer used for sample delivery in combination with the ‘Uppsala injector’, we are able to deliver particles of 70-2000 nm diameter into the XFEL-beam.
The project aims at reducing the background noise created by various gases used for aerosol injection, by using specially a designed capillary head to reduce the mass flow of sheath gases required to maintain a Taylor cone. And to track particles down to 20 nm using Rayleigh-scattering microscopy as they exit the injector.
Interested students ideally have a background in engineering, physics or a related field and have some knowledge of coding in python not compulsory. Also, should be open to acquire knowledge from other scientific areas since our projects reach across the borders of traditional scientific subjects.
Contact
Publications
Part of Applied Surface Science, 2024
- DOI for A Blyholder mechanism in the chemisorption of N2O on Ni(111): studied with Auger-photoelectron coincidence spectroscopy
- Download full text (pdf) of A Blyholder mechanism in the chemisorption of N2O on Ni(111): studied with Auger-photoelectron coincidence spectroscopy
Part of Chemistry - An Asian Journal, 2024
Part of Journal of Chemical Physics, 2024
Part of Chemical Engineering Journal, 2024
Ab initio calculations of the spectra and lifetimes of the lead dimer
Part of Physical Chemistry, Chemical Physics - PCCP, p. 11023-11036, 2024
- More publications
Staff
Contact
- Programme Professor Chemical and Bio-Molecular Physics
- Philippe Wernet