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 language | English (US) |
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Journal | ACS National Meeting Book of Abstracts |
State | Published - Aug 25 2011 |
Externally published | Yes |
Event | 241st ACS National Meeting and Exposition - Anaheim, CA, United States Duration: Mar 27 2011 → Mar 31 2011 |
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)