The influence of surface proximity on photoswitching activity of stilbene-functionalized N-heterocyclic carbene monolayers?
Chemical Communications Pub Date: 2021-06-02 DOI: 10.1039/D1CC02491D
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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Journal Name：Chemical Communications
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CAS no.: 89640-58-4
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