Measurement of in situ structure and structural dynamics in biomimetic supramolecular solar fuel catalysts

David M. Tiede, Karen L. Mulfort, Lisa M. Utschig, Amy M Scott, Oleg G. Poluektov, Lin X. Xiaoyi, Zhang Klaus

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Photosynthesis serves as a paradigm for the design of molecular systems for solar energy conversion based on modular architectures, hierarchically assembly, and host-guest chemistry linked by non-covalent chemistry. Recent examples include the development of photosystem I-catalyst hybrids and a variety of supramolecular analogues that couple photosensitizers to catalysts for solar hydrogen production. Each differs considerably in efficiency of solar hydrogen production. A central challenge lies in the development of methods for in-situ characterization of biomimetic supramolecular structure that can be correlated to catalysis. Here, we demonstrate opportunities to characterize the structures of these modular supramolecular assemblies using synchrotron X-ray scattering. We have used a combination of wide-angle x-ray scattering of the molecular components and the completed assemblies to resolve interference patterns characteristic of the ground-state assembly. Further, we have developed laser-pump/70 ps X-ray probe pulse techniques for direct detection of atomic reorganization accompanying photochemical charge separation in solution-state supramolecular systems.

Original languageEnglish (US)
Title of host publicationACS National Meeting Book of Abstracts
StatePublished - 2011
Externally publishedYes
Event241st ACS National Meeting and Exposition - Anaheim, CA, United States
Duration: Mar 27 2011Mar 31 2011

Other

Other241st ACS National Meeting and Exposition
CountryUnited States
CityAnaheim, CA
Period3/27/113/31/11

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Tiede, D. M., Mulfort, K. L., Utschig, L. M., Scott, A. M., Poluektov, O. G., Xiaoyi, L. X., & Klaus, Z. (2011). Measurement of in situ structure and structural dynamics in biomimetic supramolecular solar fuel catalysts. In ACS National Meeting Book of Abstracts