ICCAS OpenIR
Synthesis and characterization of polymetalate based photochromic inorganic-organic nanocomposites
Zhang, TR; Feng, W; Lu, R; Zhang, XT; Jin, M; Li, TJ; Zhao, YY; Yao, JN
2002
Source PublicationTHIN SOLID FILMS
ISSN0040-6090
Volume402Issue:1-2Pages:237-241
AbstractA novel reversible photochromic nanocomposite film based on a hybrid inorganic-organic matrix in which heteropolyacid H3PW12O40, (PWA) was entrapped was prepared. The structure, photochromic behaviors and mechanism of the film were investigated by means of infrared (IR) spectroscopy, UV-Vis absorption spectra and electron spin resonance (ESR). The results showed that heteropolyanion, i.e. PW12O403- (PW12), maintained a Keggin structure in the film and there was a strong interaction between anion PW12 and cation R-NH3+; (R=link of hybrid composite). The photochromic properties of the composite film originated from the reversible charge transfer between the anions and cations. Under ultraviolet (UV) irradiation, the anion would be reduced via one-electron step with simultaneous oxidation of the cation, accompanied by a color change from colorless to blue. Then the bleaching could occur when the film was in contact with ambient air or O-2 in the dark. (C) 2002 Elsevier Science B.V All rights reserved.
KeywordNanocomposite Sol-gel Processing Photochromic H3pw12o40 Charge-transfer
Indexed BySCI
Language英语
WOS IDWOS:000173378900032
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78662
Collection中国科学院化学研究所
Corresponding AuthorZhao, YY
Affiliation1.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhang, TR,Feng, W,Lu, R,et al. Synthesis and characterization of polymetalate based photochromic inorganic-organic nanocomposites[J]. THIN SOLID FILMS,2002,402(1-2):237-241.
APA Zhang, TR.,Feng, W.,Lu, R.,Zhang, XT.,Jin, M.,...&Yao, JN.(2002).Synthesis and characterization of polymetalate based photochromic inorganic-organic nanocomposites.THIN SOLID FILMS,402(1-2),237-241.
MLA Zhang, TR,et al."Synthesis and characterization of polymetalate based photochromic inorganic-organic nanocomposites".THIN SOLID FILMS 402.1-2(2002):237-241.
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