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

Citation:

Dery, S. ; Alshanski, I. ; Mervinetsky, E. ; Feferman, D. ; Yitzchaik, S. ; Hurevich, M. ; Gross, E. . The Influence Of Surface Proximity On Photoswitching Activity Of Stilbene-Functionalized N-Heterocyclic Carbene Monolayers. CHEMICAL COMMUNICATIONS 2021, 57, 6233-6236.

Date Published:

JUN 28

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. 

 


 

Notes:

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Last updated on 09/04/2023