Wang Kun, Wang Meng, Lu Hao, Liu Beibei, Huang Mingming, Yang Jiping
Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University Beijing 100191 China
RSC Adv. 2019 Mar 26;9(17):9517-9521. doi: 10.1039/c8ra10486g. eCollection 2019 Mar 22.
Three polyurethanes with different contents of tetraaryl-buta-1,3-diene derivatives in the soft segment (STMPU-25/STMPU-50/STMPU-75) have been synthesized and found to present aggregation-enhanced emission features. The fluorescence intensity of polymer films was greatly enhanced with increasing tensile stress. Also, polyurethanes with higher aggregation-induced emission fluorogen content had stronger mechano-fluorochromic behavior in the same tension state. Moreover, the resulting polyurethane films possessed high sensitivity for halogen acid gas, suggesting their potential applications in environmental monitoring fields.
已合成了三种在软段中具有不同含量四芳基-丁-1,3-二烯衍生物的聚氨酯（STMPU-25/STMPU-50/STMPU-75），并发现它们呈现出聚集增强发射特性。随着拉伸应力的增加，聚合物薄膜的荧光强度大大增强。此外，在相同拉伸状态下，具有较高聚集诱导发光荧光团含量的聚氨酯具有更强的机械荧光变色行为。而且，所得聚氨酯薄膜对卤化氢气体具有高灵敏度，表明它们在环境监测领域的潜在应用。
