Observing charge dynamics in surface reactions by time-resolved stark effects

Michael Meister; Björn Baumeier; Neil Pschirer; Rüdiger Sens; Ingmar Bruder; Frédéric Laquai; Denis Andrienko; Ian A. Howard

doi:10.1021/jp403268c

Observing charge dynamics in surface reactions by time-resolved stark effects

Michael Meister, Björn Baumeier, Neil Pschirer, Rüdiger Sens, Ingmar Bruder, Frédéric Laquai, Denis Andrienko^*, Ian A. Howard

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	9171-9177
Number of pages	7
Journal	JOURNAL OF PHYSICAL CHEMISTRY C
Volume	117
Issue number	18
DOIs	https://doi.org/10.1021/jp403268c
State	Published - May 9 2013
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Surfaces, Coatings and Films
Physical and Theoretical Chemistry

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T1 - Observing charge dynamics in surface reactions by time-resolved stark effects

AU - Meister, Michael

AU - Baumeier, Björn

AU - Pschirer, Neil

AU - Sens, Rüdiger

AU - Bruder, Ingmar

AU - Laquai, Frédéric

AU - Andrienko, Denis

AU - Howard, Ian A.

PY - 2013/5/9

Y1 - 2013/5/9

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AB - 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.

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Observing charge dynamics in surface reactions by time-resolved stark effects

Abstract

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