The thermoresponsive behaviour of a poly(N-isopropylacrylamide) hydrogel with a D-π-A type pyran-based fluorescent dye
作者： Sung-Hoon Kim , In-Jeong Hwang , Seon-Yeong Gwon , Young-A. Son
DOI: 10.1016/J.DYEPIG.2010.02.008
关键词:
摘要: Abstract A thermoresponsive poly(NIPAM-co-fluorophore) hydrogel labeled with pyran-based fluorescent dye was prepared using conventional radical copolymerization. The low critical solution temperature behaviour investigated UV–vis spectroscopy which allowed the measurement of phase transition over a wide range temperature. in aqueous underwent at 36–58 °C. fluorescence intensities polymer increased increasing across range. fluorophore displayed blue shift emission increase due to destabilization excited state. Evidence from and dynamic light scattering demonstrated that, >58 °C, size aggregates 12,500 m. morphology internal microstructure observed scanning electron microscopy.
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