Multiresponsive Hydrogels via surface modification with spiropyran-conjugated polymer network
발표자
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초록
내용
Multi-responsive hydrogels were prepared using spiropyran-conjugated chitosan networks. The intra/inter polymerization of methacrylamide chitosan chains, which interpenetrated into pre-formed poly(hydroxyethyl methacrylate) hydrogels, and subsequent modification with spiropyran derivatives resulted in the formation of multi-responsive hydrogels. The photochromic properties of these hydrogels were investigated in response to specific light illumination or acid/base treatment. In this hydrogel system, the colorless spiro form of spiropyran reversibly isomerized into the ring-open, fluorescent merocyanine state upon specific light irradiation. It is expected that the synthetic method for spiropyran-modified hydrogels using novel chitosan networks described herein would contribute greatly to the development of photochromic materials and chemical sensors.