Lin X. Chen Professor

Research Statement

Our research goal is to establish relationships of energetics, dynamics and structures in photochemical and photophysical processes on different temporal and spatial scales.  We are interested in reactions  related to solar energy conversion, catalysis, molecular devices and enzymatic processes. Using a variety of experimental techniques, such as ultrafast optical and X-ray spectroscopy/scattering, as well as theoretical calculations, we seek fundamental understanding of photon/matter interactions in order to minimize the driving force and optimize the output of photochemical reactions.   The results from our research provide feedbacks/guidance to materials design and synthesis.

Selected Publications

Ultrafast Processes in the Relaxation of a Nickel(II) Porphyrin Described by Femtosecond X-ray Absorption Spectroscopy, Megan L. Shelby, Patrick J. Lestrange, Nicholas E. Jackson, Michael W. Mara, Kristoffer Haldrup, Andrew B. Stickrath, Diling Zhu, Henrik Lemke, Brian M. Hoffman, Xiaosong Li, Lin X. Chen, J. Am. Chem. Soc. 138, 8752–8764 (2016) JACS Spotlight.

Pyrazolate-Bridged Pt(II) Dimers with Tunable Pt-Pt Distances Enable Control Over the Excited State Properties and Dynamics, Samantha E. Brown-Xu, Matthew S. Kelley, Kelly A. Fransted, Felix N. Castellano, Lin X. Chen, J. Phys. Chem. A.­­ 120, 543–550 (2016).

Electron Injection from Copper Diimine Sensitizers into TiO2: Structural Effects and Their Implications for Solar Energy Conversion Devices, Michael W. Mara, David N. Bowman, Onur Buyukcakir, Megan L. Shelby, Kristoffer Haldrup, Jier Huang, Michael R. Harpham, Andrew B. Stickrath, Xiaoyi Zhang, J. Fraser Stoddart, Ali Coskun, Elena Jakubikova, Lin X. Chen, J. Am. Chem. Soc.137, 9670- 9684 (2015).

Conformational Order in Aggregates of Conjugated Polymers, Nicholas E. Jackson, Kevin L. Kohlstedt, Brett M. Savoie, Monica Olvera de la Cruz, George C. Schatz, Lin X. Chen, Mark A. Ratner, J. Am. Chem. Soc. 137, 6254–6262 (2015).

The Next Breakthrough for Organic Photovoltaics? Nicholas E. Jackson, Brett M. Savoie, Tobin J. Marks, Lin X. Chen, and Mark A. Ratner, J. Phys. Chem. Lett. 6, 77−84 (2015).

Effects of Intramolecular Exciton Dynamics in Charge-Transfer Polymer Organic Photovoltaic Devices, B. S. Rolczynski, J. M. Szarko, H. J. Son, Y. Liang, L. Yu, L. X. Chen, J. Phys. Chem. Lett. 5, 1856–1863 (2014)

Photovoltaic Functions of Intramolecular Charge Transfer Copolymers: Exciton and Charge Transfer Dynamics Studies of PTB7, Jodi M. Szarko, Brian S. Rolczynski, Sylvia J. Lou, Tao Xu, Tobin J. Marks, Luping Yu, Lin X. Chen, Adv. Func. Mater., 24, 10-26 (2014)

Photochemical Processes Revealed by X-ray Transient Absorption Spectroscopy, Lin X. Chen, Xiaoyi Zhang, (Invited Perspective article)  J. Phys. Chem. Lett.   4, 4000–4013 (2013)

Controlling Conformations of Conjugated Polymers and Small Molecules: The Role of Nonbonding Interactions, Nicholas E. Jackson, Brett M. Savoie, Kevin L. Kohlstedt, Monica Olvera de la Cruz, George C. Schatz, Lin X. Chen, Mark A. Ratner, J. Am. Chem. Soc. 135, 10475–10483, (2013).

Photodriven Charge Separation Dynamics in CdSe/ZnS Core/ Shell Quantum Dot/Cobaloxime Hybrid for Efficient Hydrogen Production, J. Huang, K. L. Mulfort, P. Du, L. X. ChenJ. Am. Chem. Soc. 134, 16472 (2012).

Ultrafast Intramolecular Exciton Splitting Dynamics in Isolated Low Bandgap Polymers and Their Implications in Photovoltaic Materials Design, B. S. Rolczynski, J. M. Szarko, H. J. Son, Y. Liang, L. Yu, L. X. ChenJ. Am. Chem. Soc. 134 , 4142 (2012).

Coherence in Metal-Metal-to-Ligand-Charge-Transfer Transitions of a Dimetallic Complex Revealed by Ultrafast Transient Absorption Anisotropy, S. Cho, M. W. Mara, X. Wang, J. V. Lockard, A. A. Rachford, F. N. Castellano, L. X. ChenJ. Phys. Chem. A., 115, 3990 (2011).

Selected Honors/Awards

  • American Association for the Advancement of Science (AAAS) Fellow, 2012.
  • The University of Chicago Award for Distinguished Performance at Argonne, 2002.