Toward modulation of the naphthopyran photochromism: a miniemulsion copolymerization strategy
作者:Dehua Li、Meiduo Zhang、Guang Wang、Shuangxi Xing
DOI:10.1039/c3nj01313h
日期:——
Novel naphthopyran derivative based photochromic polymer nanoparticles are prepared via miniemulsion copolymerization with methyl methacrylate (MMA) and n-butyl methacrylate (BMA) monomers. The systematic modulation of the photochromic rate can be achieved via tuning the ratio of MMA and BMA monomers to lead the naphthopyrans to swing between rigid and soft surroundings. Transmission electron micrographs
通过与甲基丙烯酸甲酯(MMA)和甲基丙烯酸正丁酯(BMA)单体进行细乳液共聚制备了新型的基于萘并吡喃衍生物的光致变色聚合物纳米粒子。光致变色速率的系统的调制可以实现经由调整MMA和BMA单体的比例,以使萘并吡喃在刚性和柔软的环境之间摇摆。透射电子显微照片(TEM)和动态光散射(DLS)图像证明纳米颗粒是离散且光滑的。聚合物纳米颗粒中萘并吡喃的典型光谱特征表明,光致色素成功地掺入了纳米颗粒中。另外,该聚合物纳米颗粒在UV辐射和热逆反应时显示出良好的光致变色可逆性和稳定性。