Observing Charge Dynamics in Surface Reactions by Time-Resolved Stark Effects
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- 作者：Michael Meister ; Bj枚rn Baumeier ; Neil Pschirer ; R眉diger Sens ; Ingmar Bruder ; Fr茅d茅ric Laquai ; Denis Andrienko ; Ian A. Howard
- 刊名：The Journal of Physical Chemistry C
- 出版年：2013
- 出版时间：May 9, 2013
- 年：2013
- 卷：117
- 期：18
- 页码：9171-9177
- 全文大小：366K
- 年卷期：v.117,no.18(May 9, 2013)
- ISSN：1932-7455
文摘
Surfaces facilitate chemical reactions occurring in biological and synthetic systems with wide-ranging applications from energy conversion to catalysis and sensing. Microscopic understanding of the structure and dynamics that underpin these reactions is keenly pursued with novel experimental techniques such as sum frequency generation and laser-assisted photoemission spectroscopy. Herein, we demonstrate a method for interpreting the time-resolved observation of the Stark effect to provide an in situ optical probe of the charge dynamics during an interfacial reaction. The analysis holds broad potential for investigating charge migration in surface-bound catalysts and sensors, as well as photocenter and retinal proteins, even when the Stark parameters of the material are unknown. We demonstrate the analysis with respect to the energy conversion reaction in solid-state dye-sensitized solar cells.