The influence of surface proximity on photoswitching activity of stilbene-functionalized N-heterocyclic carbene monolayers

Shahar Dery; Israel Alshanski; Evgeniy Mervinetsky; Daniel Feferman; Shlomo Yitzchaik; Mattan Hurevich; Elad Gross

doi:10.1039/d1cc02491d

The influence of surface proximity on photoswitching activity of stilbene-functionalized N-heterocyclic carbene monolayers

Shahar Dery, Israel Alshanski, Evgeniy Mervinetsky, Daniel Feferman, Shlomo Yitzchaik, Mattan Hurevich, Elad Gross

Institute of Chemistry

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

10 Scopus citations

Abstract

Self-assembly of photo-responsive molecules is a robust technology for reversibly tuning the properties of functional materials. Herein, we probed the crucial role of surface-adsorbate interactions on the adsorption geometry of stilbene-functionalized N-heterocyclic carbenes (stilbene-NHCs) monolayers and its impact on surface potential. Stilbene-NHCs on Au film accumulated in a vertical orientation that enabled high photoisomerization efficiency and reversible changes in surface potential. Strong metal-adsorbate interactions led to flat-lying adsorption geometry of stilbene-NHCs on Pt film, which quenched the photo-isomerization influence on surface potential. It is identified that photo-induced response can be optimized by positioning the photo-active group in proximity to weakly-interacting surfaces.

Original language	English
Pages (from-to)	6233-6236
Number of pages	4
Journal	Chemical Communications
Volume	57
Issue number	51
DOIs	https://doi.org/10.1039/d1cc02491d
State	Published - 28 Jun 2021

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© 2021 The Royal Society of Chemistry.

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abstract = "Self-assembly of photo-responsive molecules is a robust technology for reversibly tuning the properties of functional materials. Herein, we probed the crucial role of surface-adsorbate interactions on the adsorption geometry of stilbene-functionalized N-heterocyclic carbenes (stilbene-NHCs) monolayers and its impact on surface potential. Stilbene-NHCs on Au film accumulated in a vertical orientation that enabled high photoisomerization efficiency and reversible changes in surface potential. Strong metal-adsorbate interactions led to flat-lying adsorption geometry of stilbene-NHCs on Pt film, which quenched the photo-isomerization influence on surface potential. It is identified that photo-induced response can be optimized by positioning the photo-active group in proximity to weakly-interacting surfaces.",

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AU - Alshanski, Israel

AU - Mervinetsky, Evgeniy

AU - Feferman, Daniel

AU - Yitzchaik, Shlomo

AU - Hurevich, Mattan

AU - Gross, Elad

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The influence of surface proximity on photoswitching activity of stilbene-functionalized N-heterocyclic carbene monolayers

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