College of Materials Science and Engineering, Beijing University of Chemical and Technology, Beijing, 100029, P. R. China.
SINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, P. R. China.
Macromol Rapid Commun. 2018 May;39(10):e1800035. doi: 10.1002/marc.201800035. Epub 2018 Apr 20.
A new family of photoluminescent polymers with dual chromophores is prepared in this study by using poly(maleic anhydride-alt-vinyl acetate), acetone, and metal hydroxide. These polymers, which contain both bulky carboxylic ester groups and metal carboxylate groups, are found to be dual-emission photoluminescent, with a blue luminescence excitation-dependent group and a red luminescence excitation-independent group. These photoluminescence polymers with a nonconjugated structure and dual chromophores also show characteristics of aggregation-induced emission (AIE). The luminous intensities of the AIE fibers prepared using the polymers are found to increase after stretching, in contrast to traditional photoluminescent fibers with the aggregation-caused quenching property. The study also finds that the stretched fibers can emit the three primary colors when irradiated by ultraviolet, blue, and green light.
本研究通过聚（马来酸酐-alt-醋酸乙烯酯）、丙酮和氢氧化物制备了一类新型的含双生色团的光致发光聚合物。这些聚合物含有大体积的羧酸酯基团和金属羧酸盐基团，具有双发射光致发光特性，其中蓝色发光为激发依赖性基团，红色发光为激发独立性基团。这些具有非共轭结构和双生色团的光致发光聚合物也表现出聚集诱导发射（AIE）的特性。研究发现，与具有聚集猝灭性质的传统光致发光纤维相反，用这些聚合物制备的 AIE 纤维在拉伸后其发光强度增加。此外，研究还发现，拉伸后的纤维在受到紫外光、蓝光和绿光照射时可以发出三基色。
