Citation:
Wei FENG, Tie Rui ZHANG, Yan LIU, Ran LU, Ying Ying ZHAO, Jian Nian YAO. Preparation and Photochromic Behavior of Novel Hybrid Inorganic-Organic Thin Film[J]. Chinese Chemical Letters,
;2002, 13(5): 460-463.
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A novel photochromic complex comprising of Keggin type tungstophosphate acid (PW12) and polyacrylamide (PAM) was prepared. FT-IR results showed that the Keggin geometry of PW12 was still preserved inside the composite, and a charge-transfer bridge was built between PW12 and PAM via hydrogen bond. AFM images indicated that surface topography of polymer matrix changed after adding PW12. Under UV irradiation, the film was reduced photochemically to yield a blue species, which was reversible in the present of oxygen in polymeric network.
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Keywords:
- 12-Tungstophosphate acid,
- polyacrylamide,
- photochromism
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