Journal
MACROMOLECULAR SYMPOSIA
Volume 207, Issue -, Pages 47-55Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/masy.200450305
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A brief review of our recent work on polymer gel opals is given in memory of late Professor Tanaka. The central idea is to first synthesize monodisperse polymer gel nanoparticles, then self-assemble them into a 3D network, and eventually covalently bond them. The covalent bonding contributes to the structural stability, while self-assembly provides them with crystal structures that diffract light, resulting in colors. N-isopropylacrylamide (NIPA) gel has been used as a model system for this study. The nanostructured NIPA gel, which contain up to 97 wt % water, displays a striking iridescence like precious opal but are soft and flexible like gelatin.
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