Measuring reversible photomechanical switching rates for a molecule at a surface

Matthew J. Comstock; Niv Levy; Jongweon Cho; Luis Berbil-Bautista; Michael F. Crommie; Daniel A. Poulsen; Jean M.J. Fŕchet

doi:10.1063/1.2901877

Measuring reversible photomechanical switching rates for a molecule at a surface

Matthew J. Comstock, Niv Levy, Jongweon Cho, Luis Berbil-Bautista, Michael F. Crommie, Daniel A. Poulsen, Jean M.J. Fŕchet

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

57 Scopus citations

Abstract

We have used single-molecule-resolved scanning tunneling microscopy to measure the photomechanical switching rates of azobenzene-derived molecules at a gold surface during exposure to UV and visible light. This enables the direct determination of both the forward and reverse photoswitching cross sections for surface-mounted molecules at different wavelengths. In a dramatic departure from molecular behavior in solution-based environments, visible light does not efficiently reverse the reaction for azobenzene-derived molecules at a gold surface.

Original language	English (US)
Article number	123107
Journal	Applied Physics Letters
Volume	92
Issue number	12
DOIs	https://doi.org/10.1063/1.2901877
State	Published - 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2901877

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abstract = "We have used single-molecule-resolved scanning tunneling microscopy to measure the photomechanical switching rates of azobenzene-derived molecules at a gold surface during exposure to UV and visible light. This enables the direct determination of both the forward and reverse photoswitching cross sections for surface-mounted molecules at different wavelengths. In a dramatic departure from molecular behavior in solution-based environments, visible light does not efficiently reverse the reaction for azobenzene-derived molecules at a gold surface.",

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AU - Levy, Niv

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AU - Berbil-Bautista, Luis

AU - Crommie, Michael F.

AU - Poulsen, Daniel A.

AU - Fŕchet, Jean M.J.

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AB - We have used single-molecule-resolved scanning tunneling microscopy to measure the photomechanical switching rates of azobenzene-derived molecules at a gold surface during exposure to UV and visible light. This enables the direct determination of both the forward and reverse photoswitching cross sections for surface-mounted molecules at different wavelengths. In a dramatic departure from molecular behavior in solution-based environments, visible light does not efficiently reverse the reaction for azobenzene-derived molecules at a gold surface.

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U2 - 10.1063/1.2901877

DO - 10.1063/1.2901877

M3 - Article

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Measuring reversible photomechanical switching rates for a molecule at a surface

Abstract

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