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

O6; 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 betwe...

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Bibliographic Details
Published in:Chinese science bulletin 2006-06, Vol.51 (11), p.1389-1392
Main Authors: Guan, Jing, Tan, Zhongyin, Xu, Liping, Li, Shanshan, Yang, Zhiyong, Wan, Lijun
Format: Article
Language:English
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Summary:O6; 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 cinnamic acid at atom level.
ISSN:1001-6538
1861-9541
DOI:10.1007/s11434-006-1389-5