Stilbene-benzophenone dyads for free radical initiating polymerization of methyl methacrylate under visible light irradiation
作者:Xiaozhuan Qin、Ge Ding、Yulong Gong、Chuan Jing、Guangyue Peng、Shihong Liu、Lanying Niu、Shengtao Zhang、Ziping Luo、Hongru Li、Fang Gao
DOI:10.1016/j.dyepig.2016.04.035
日期:2016.9
light photoinitiating polymerization of methyl methacrylate by the new dyads was studied by photo-differential scanning calorimetry. The results suggested that the AB2 dyad showed more efficient photoinitiating polymerization of methyl methacrylate than the AB one under visible light irradiation. Furthermore, the new dyads yielded the greater visible light photoinitiaing polymerization effect than the intermolecular
通过多步途径合成了AB和AB 2反式二苯乙烯-二苯甲酮二联体。目标二分体在可见光区域显示出显着的吸收。通过光度差示扫描量热法研究了新型二单元组可见光引发甲基丙烯酸甲酯的光聚合。结果表明,AB 2在可见光照射下,二元组显示出比AB型更有效的甲基丙烯酸甲酯光引发聚合。此外,与分子间光引发体系和商业光引发剂二茂钛相比,新的二元组产生了更大的可见光光引发聚合作用。通过凝胶渗透色谱法测定由新的二元组产生的可见光光聚合物的分子量。通过静态和瞬态吸收和发射光谱,电子自旋共振光谱和循环伏安图分析了新二元组的可见光光引发机理。通过差示扫描量热法和热失重法进一步研究了新二联体的热稳定性。