ICCAS OpenIR
Novel hybrid inorganic-organic film based on the tungstophosphate acid-polyacrylamide system: Photochromic behavior and mechanism
Feng, W; Zhang, TR; Liu, Y; Wei, L; Lu, R; Li, TJ; Zhao, YY; Yao, JN
2002
Source PublicationJOURNAL OF MATERIALS RESEARCH
ISSN0884-2914
Volume17Issue:1Pages:133-136
AbstractA novel photochromic complex composed of Keggin-type tungstophosphate acid (PW12) and polyacrylamide (PAM) was prepared. Atomic force microscopy (AFM), thermogravimetric study, Fourier transform infrared spectra (FTIR), ultraviolet-visible absorption spectra (UV-VIS), and electron resonance spectra (ESR) were used to investigate the surface topography, composition, and photochromic behavior and mechanism of the film. Under UV irradiation, the film was reduced photochemically to yield a blue species. AFM images indicated that surface topography of the polymer matrix changed after adding PW12. FTIR results showed that the Keggin geometry of PW12 was still preserved inside the matrix, and a charge-transfer bridge was built between PW12 and PAM by hydrogen bonding. The characteristic signal of W (V) and the formation of a radical signal in ESR spectra indicated that PAM was a hydrogen donor and the photoreduced process was in accordance with the radical mechanism. The diffusion of oxygen in the polymeric network plays an important role in the reversibility of photochromism.
Indexed BySCI
Language英语
WOS IDWOS:000173190800020
PublisherMATERIALS RESEARCH SOCIETY
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/79000
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
Feng, W,Zhang, TR,Liu, Y,et al. Novel hybrid inorganic-organic film based on the tungstophosphate acid-polyacrylamide system: Photochromic behavior and mechanism[J]. JOURNAL OF MATERIALS RESEARCH,2002,17(1):133-136.
APA Feng, W.,Zhang, TR.,Liu, Y.,Wei, L.,Lu, R.,...&Yao, JN.(2002).Novel hybrid inorganic-organic film based on the tungstophosphate acid-polyacrylamide system: Photochromic behavior and mechanism.JOURNAL OF MATERIALS RESEARCH,17(1),133-136.
MLA Feng, W,et al."Novel hybrid inorganic-organic film based on the tungstophosphate acid-polyacrylamide system: Photochromic behavior and mechanism".JOURNAL OF MATERIALS RESEARCH 17.1(2002):133-136.
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