ICCAS OpenIR
Preparation and photochromic properties of hybrid thin films based on heteropolyoxometallate and polyacrylamide
Feng, W; Zhang, TR; Liu, Y; Lu, R; Guan, C; Zhao, YY; Yao, JN
2002-11-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume18Issue:6Pages:558-560
AbstractA series of photochromic hybrid films were prepared through entrapping Dawson type tungsten heteropolyoxometallates (P2W18O626-) and molybdenum heteropolyoxometallate (P2Mo18O626-) into polyacrylamide matrix. FTIR results showed that the Dawson geometry of heteropolyoxometallates is still preserved inside the composites and strong coulombic interaction is built between heteropolyoxometallates and polyacrylamide via hydrogen bonding. Irradiated with ultraviolet light, the transparent films change from colorless to blue and show reversible photochromism. The bleaching process occurs when the films are in contact with air or 02 in the dark. The molybdenum heteropolyoxometallate hybrid film has higher photochromic efficiency and slower bleaching reaction than tungsten heteropolyoxometallate hybrid film. ESR results indicated that polyacrylamide is a hydrogen donor and the photoreduced process is in accordance with the radical mechanism.
KeywordThin Film Heteropolyoxometallate Polyacrylamide Photochromism
Indexed BySCI
Language英语
WOS IDWOS:000179670900022
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78566
Collection中国科学院化学研究所
Corresponding AuthorLu, R
Affiliation1.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
Recommended Citation
GB/T 7714
Feng, W,Zhang, TR,Liu, Y,et al. Preparation and photochromic properties of hybrid thin films based on heteropolyoxometallate and polyacrylamide[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2002,18(6):558-560.
APA Feng, W.,Zhang, TR.,Liu, Y.,Lu, R.,Guan, C.,...&Yao, JN.(2002).Preparation and photochromic properties of hybrid thin films based on heteropolyoxometallate and polyacrylamide.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,18(6),558-560.
MLA Feng, W,et al."Preparation and photochromic properties of hybrid thin films based on heteropolyoxometallate and polyacrylamide".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 18.6(2002):558-560.
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