Supramolecular Self-Assembly and Photo-Induced Transition of a Halogenated Azo-Benzene Molecule on Au(111) Surface

被引：1

作者：

Ijaz, Talha ^{[1
]}

Zhang, Xin ^{[2
]}

Chen, Xiaorui ^{[3
]}

Xing, Xueting ^{[1
]}

Fang, Simin ^{[1
]}

Liu, Mengyuan ^{[1
]}

Lu, Huan ^{[4
]}

Li, Fangsen ^{[5
]}

Gao, Jianzhi ^{[1
]}

Pan, Minghu ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China

[2] Northwest Univ, Sch Phys, Xian 710069, Peoples R China

[3] Xian Univ, Sch Mech & Mat Engn, Xian 710065, Peoples R China

[4] Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China

[5] Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, Vacuum Interconnected Nanotech Workstat Nano X, Suzhou 215123, Peoples R China

来源：

CRYSTALS | 2023年 / 13卷 / 03期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

self-assembly; scanning tunneling microscope; Azo-benzene; photo-responsiveness; AZOBENZENE DERIVATIVES; ISOMERIZATION;

D O I：

10.3390/cryst13030404

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Azobenzene derivatives are a unique class of photo-switch molecules with promising potential for nanoscale optical applications. We have studied the self-assembly and photo-induced mechanical switching of azobenzene derivatives on Au(111) at the single-molecule level by using scanning tunneling microscope (STM). 4,4 '-Dibromo-azobenzene (Br-AB) molecules are assembled into two types of well-ordered structures on Au(111) surfaces in the trans-isomer configuration. Br-AB molecules experienced configurational changes from trans-to-cis photo-isomerization upon the exposure to the UV light. This photo-isomerization of Br-AB molecules was observed to occur at random sites of ordered structure, evidenced by the appearance of bright protrusions with the height increment. Our results may open up new routes to engineer nanoscale photo-switch molecular devices.

引用

页数：9

共 25 条

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