Fabrication of heteropolyoxometalate-based photochromic inorganic-organic nanocomposites

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	Fabrication of heteropolyoxometalate-based photochromic inorganic-organic nanocomposites
	Zhang, TR ; Feng, W ; Bao, CY ; Lu, R ; Zhang, XT ; Li, TJ ; Zhao, YY ; Yao, JN
刊名	JOURNAL OF MATERIALS RESEARCH
	2001-08-01
卷号	16 期号:8 页码:2256-2263
ISSN号	0884-2914
英文摘要	A series of photochromic sol-el films are prepared through entrapping tungsten heteropolyoxometallates (PW12O403-, SiW12O404-) and molybdenum heteropolyoxometallate (PMo12O403-) into a kind of inorganic-organic matrix cohydrolyzed from tetraethylorthosilicate and 3-aminopropyltriethoxysilane. The films show reversible photochromicity. Irradiated with ultraviolet light, the transparent films change from colorless to blue. Then, bleaching occurs when the films area in contact with air or O-2 in the dark. The Keggin-type polyanions interact with R-NH3+ cations strongly, and thus disperse uniformly in the sol-gel matrix, as proved by Fourier transform infrared spectra and x-ray diffraction. The molybdenum heteropolyoxometallate sol-gel film has higher photochromic efficiency and much slower bleaching than its counterparts of tungsten heteropolyoxometallate. A charge-transfer model which is supported by electron spin resonance and related literature [T. Yamase, Chem. Rev. 98, 307, (1998)] is put forth to explain the above experimental results.
语种	英语
出版者	MATERIALS RESEARCH SOCIETY
WOS记录号	WOS:000170227500016
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/77119]
专题	中国科学院化学研究所
通讯作者	Zhao, YY
作者单位	1.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Ctr Mol Sci, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhang, TR,Feng, W,Bao, CY,et al. Fabrication of heteropolyoxometalate-based photochromic inorganic-organic nanocomposites[J]. JOURNAL OF MATERIALS RESEARCH,2001,16(8):2256-2263.
APA	Zhang, TR.,Feng, W.,Bao, CY.,Lu, R.,Zhang, XT.,...&Yao, JN.(2001).Fabrication of heteropolyoxometalate-based photochromic inorganic-organic nanocomposites.JOURNAL OF MATERIALS RESEARCH,16(8),2256-2263.
MLA	Zhang, TR,et al."Fabrication of heteropolyoxometalate-based photochromic inorganic-organic nanocomposites".JOURNAL OF MATERIALS RESEARCH 16.8(2001):2256-2263.