Photobase generating monomers: synthesis, evaluation and utilization for fabricating fluorescence patterns
作者:Lanlan Liu、Jinbao Guo、Zihao Li、Jie Wei
DOI:10.1039/c4ra00499j
日期:——
In this study, we fabricated four new photobase generating monomers, in which carbamate units functioned as the photobase generating moieties, methacrylate units served as the polymerizable groups and four different groups, succinimido, camphorquinone 3-oximino, di-2-thienyl ketoximino and difuril dioximino units, acted as photosensitive species. The effect of different photosensitive species on the photochemical behavior of the monomers was investigated in detail. The results demonstrate that, among the four monomers, succinimido methacryloxyethyl carbamate (SMC) exhibits the most stable photobase generating property. Furthermore, a copolymer containing SMC is used for a fluorescence imaging material. The fluorescence spectrum of the fluorescamine-treated irradiated copolymer film showed a strong fluorescence in the range of 420–650 nm with a fluorescence maximum at 476 nm. The patterns in the copolymer films exhibit very distinct fluorescence images with colors of blue, green and red at certain observation wavelengths.
在本研究中,我们合成了四种新型光碱基生成单体,其中氨基甲酸酯单元作为光碱基生成基团,甲基丙烯酸酯单元作为可聚合基团,而琥珀酰亚胺、樟脑醌3-肟、二-2-噻吩酮肟和二呋喃二肟单元分别作为光敏物种。我们详细研究了不同光敏物种对单体光化学行为的影响。结果表明,在四种单体中,琥珀酰亚胺甲基丙烯酰氧乙基氨基甲酸酯(SMC)展现出最稳定的光碱基生成性能。此外,我们还利用含有SMC的共聚物制备了一种荧光成像材料。经荧光胺处理并照射后的共聚物薄膜在420-650 nm范围内呈现出强烈的荧光,最大荧光峰位于476 nm。共聚物薄膜中的图案在特定观测波长下显示出非常鲜明的蓝、绿、红三色荧光图像。