Preparation and characterization of a photochromic hydrogel
Preparation and characterization of a photochromic hydrogel
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DOI：
10.5185/amlett.2011.2227
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发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
Chen Mo;Lin Lin-Lin;L. Xiaoqiang
中科院分区：
文献类型：
--
作者：
Chen Mo;Lin Lin-Lin;L. Xiaoqiang
合成了一种新型光致变色水凝胶--螺吡喃(SP)-聚乙烯吡咯烷酮(PVP)-聚(N-异丙基丙烯酰胺)(PNIPAM)水凝胶。合成产物的分子结构通过核磁共振和红外光谱进行了表征。该水凝胶的光致变色性通过摄影得到证实，并用紫外可见光谱进行了表征。通过观察水凝胶对暗环境下交变紫外光照射的响应，测试了水凝胶的光致变色可逆性。荧光显微照片显示了水凝胶的荧光效应，证实了水凝胶的光致变色特性，表明化学掺杂使功能化的SP在凝胶中分布均匀。版权所有(C)2011 VBRI出版社。
A new type of photochromic hydrogel, spiropyran (SP)-Polyvinylpyrrolidone (PVP)-poly (N-isopropyl acrylamide) (PNIPAM) hydrogel with functionalized SP chemically incorporated, was synthesized. The molecular structure of synthesized products was given by nuclear magnetic resonance (NMR) spectra and infrared spectrum (IR). The photochromism of the hydrogel was evidenced by photography and characterized by ultraviolet-visible (UV-Vis) spectroscopy. The photochromic reversibility of the hydrogel was tested through observing its responses to the alternating UV irradiation to dark environment. The fluorescence micrographs showed the fluorescent effect as well as confirmed the photochromic properties of the hydrogel, and indicated that the chemical incorporation made the functionalized SP distribute well in the gel. Copyright © 2011 VBRI press.