Self-assembly of 4-(amyloxy) cinnamic acid on HOPG and its photoinduced transformation: An STM study  

作　　者：GUAN Jing TAN Zhongyin XU Liping LI Shanshan YANG Zhiyong WAN Lijun 

机构地区：[1]Department of Chemistry, Liaoning Normal University, Dalian 116029 China [2]Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Chinese Science Bulletin》2006年第11期1389-1392,共4页

基　　金：This work was supported by the National Natural Science Foundation of China （Grant No. 20121301）;the National Key Project on Basic Research （Grant No. 2002CCA03100）.

摘　　要：Light-induced structural transformation of 4-(amyloxy)cinnamic acid (AOCA) on the surface of highly oriented pyrolytic graphite (HOPG) was investigated with scanning tunneling microscopy (STM). AOCA molecules form highly-ordered adlayer on HOPG spontaneously, stabilized by hydrogen bonding between neighboring molecules. After UV-light irradiation onto the adlayer, the ordered ad- layer was disrupted and a new disordered structure was observed, which indicated that dimerization of AOCA molecules took place. The STM results reveal the direct evidence for the photoisomerization of cin- namic acid at atom level.Light-induced structural transformation of 4-（amyloxy）cinnamic acid （AOCA） on the surface of highly oriented pyrolytic graphite （HOPG） was investigated with scanning tunneling microscopy （STM） AOCA molecules form highly-ordered adlayer on HOPG spontaneously, stabilized by hydrogen bonding between neighboring molecules. After UV-light irradiation onto the adlayer, the ordered adlayer was disrupted and a new disordered structure was observed, which indicated that dimerization of AOCA molecules took place. The STM results reveal the direct evidence for the photoisomerization of cin- namic acid at atom level.

关 键 词：扫描隧道显微镜 AOCA 自组装 光诱导反应 HOPG 肉桂酸 

分 类 号：O625[理学—有机化学]