A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles

doi:10.1016/j.jcis.2007.07.081

CORC > 化学研究所 > 中国科学院化学研究所

	A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles
	Jiang, Min; Liu, Minghua
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2007-12-01
卷号	316 期号:1 页码:100-106
关键词	Polyoxometalate Langmuir-blodgett Films Photoluminescence Switch
ISSN号	0021-9797
DOI	10.1016/j.jcis.2007.07.081
英文摘要	Hybrid organized molecular films composed of a polyoxometalate, decatungsteuropate (EuW10), and amphiphiles such as hexadecyltrimethylammonium bromide (CTAB), n-octadecylamine (ODA) and 4-hexadecylaniline (HDA) were fabricated by Langmuir-Blodgett (LB) technique and their photoluminescent properties were investigated. The hybrid films, which were formed through in situ complex formation at the air/water interface and subsequently transferred onto the solid substrate, were characterized by UV-vis, FT-IR, fluorescence, and AFM measurements. The transferred hybrid films showed red emission characteristic of the Eu(III) ion upon UV irradiation. The photoluminescence of the hybrid films was sensitive to the acid and base gases. When ODA/EuW10 and HDA/EuW10 hybrid films were exposed to HCI gas, their photoluminescence disappeared completely. Interestingly, the photoluminescence was recovered upon subsequent exposing the same film to NH3 gas. Such process could be repeated many times and a switch based on these hybrid films was proposed. On the other hand, the photoluminescent intensity of CTAB/EuW10 film decreased but never disappeared upon exposing to HCI gas. Similarly, the photoluminescence could also be partially recovered upon exposing to NH3 gas. Detailed investigation on the spectral changes of the films revealed that the interaction between EuW10 and CTAB and was different from EuW 10 with ODA or HDA, and protonation of amine group in ODA or HDA induced by HCI gas played an important role in realizing the "on" and "off" photoluminescence switch of the hybrid films. (C) 2007 Published by Elsevier Inc.
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000250349300015
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/61143]
专题	中国科学院化学研究所
通讯作者	Liu, Minghua
作者单位	Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Colloid & Interface Sci, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Min,Liu, Minghua. A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2007,316(1):100-106.
APA	Jiang, Min,&Liu, Minghua.(2007).A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles.JOURNAL OF COLLOID AND INTERFACE SCIENCE,316(1),100-106.
MLA	Jiang, Min,et al."A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles".JOURNAL OF COLLOID AND INTERFACE SCIENCE 316.1(2007):100-106.