Reversible wettability of photoresponsive fluorine-containing azobenzene polymer in Langmuir-Blodgett films

doi:10.1021/la010071r

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	Reversible wettability of photoresponsive fluorine-containing azobenzene polymer in Langmuir-Blodgett films
	Feng, CL ; Zhang, YJ ; Jin, J ; Song, YL ; Xie, LY ; Qu, GR ; Jiang, L ; Zhu, DB
刊名	LANGMUIR
	2001-07-24
卷号	17 期号:15 页码:4593-4597
ISSN号	0743-7463
DOI	10.1021/la010071r
英文摘要	A polymer containing 3'-[trifluoromethyl-4,3'-dibenzoazo] dyes in the side chains has been synthesized, and a monolayer of this polymer has been transferred onto solid substrate by the Langmuir-Blodgett (LB) technique. The reversible processes of photoisomerization of the LB films induced by light are observed by UV-vis absorption spectra, in situ atomic force microscopy, and friction force microscopy. In addition, the physisorbed monolayers of the monomer of the polymer at liquid/solid interface are investigated by scanning tunneling microscopy. The films of the polymer show the reversible change of morphological and friction force responses under alternate UV(365 +/- 10 nm) and visible (436 +/- 10 nm) irradiation. The films also undergo reversible wettability changes with UV and visible light irradiation, which are directly confirmed by contact angle measurement. The largest photoinduced change of contact angle is 11 +/- 1 degrees. The larger value of the contact angles measured corresponds to films mainly composed of the trans isomers of the molecules. Evidence shows that the photoinduced surface energy changes have an important influence on the wettability changes.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000170029300023
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/77553]
专题	中国科学院化学研究所
通讯作者	Jiang, L
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 2.Henan Normal Univ, Dept Chem, Xinxiang 453002, Peoples R China 3.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
推荐引用方式 GB/T 7714	Feng, CL,Zhang, YJ,Jin, J,et al. Reversible wettability of photoresponsive fluorine-containing azobenzene polymer in Langmuir-Blodgett films[J]. LANGMUIR,2001,17(15):4593-4597.
APA	Feng, CL.,Zhang, YJ.,Jin, J.,Song, YL.,Xie, LY.,...&Zhu, DB.(2001).Reversible wettability of photoresponsive fluorine-containing azobenzene polymer in Langmuir-Blodgett films.LANGMUIR,17(15),4593-4597.
MLA	Feng, CL,et al."Reversible wettability of photoresponsive fluorine-containing azobenzene polymer in Langmuir-Blodgett films".LANGMUIR 17.15(2001):4593-4597.