Light‐induced Photoswitching of 4‐(Phenylazo)benzoic Acid on Au(111)

Author:

Liyanage Chamathka Dehiwala1,Ortiz‐Garcia José J.1,Struckmeier Annalena1,Kienzler Michael1,Quardokus Rebecca C.1ORCID

Affiliation:

1. Department of Chemistry University of Connecticut 55 North Eagleville Road Storrs CT USA

Abstract

AbstractPhotochromic molecules can undergo a reversible conversion between two isomeric forms upon exposure to external stimuli such as electromagnetic radiation. A significant physical transformation accompanying the photoisomerization process defines them as photoswitches, with potential applications in various molecular electronic devices. As such, a detailed understanding of the photoisomerization process on surfaces and the influence of the local chemical environment on switching efficiency is essential. Herein, we use scanning tunneling microscopy to observe the photoisomerization of 4‐(phenylazo)benzoic acid (PABA) assembled on Au(111) in kinetically constrained metastable states guided by pulse deposition. Photoswitching is observed at low molecular density and is absent in tight‐packed islands. Furthermore, switching events were noted in PABA molecules coadsorbed in a host octanethiol monolayer, suggesting an influence of the surrounding chemical environment on photoswitching efficiency.

Publisher

Wiley

Subject

Physical and Theoretical Chemistry,Atomic and Molecular Physics, and Optics

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A Scanning Tunneling Microscopy Study of the Photoisomerization of Diazocine;The Journal of Physical Chemistry Letters;2024-04-08

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