An Zhihang, Liu Renping, Liu Jiaping, Du Jiaying, Chen Si, Wang Xu, Sheng Zhongyi, Liu Heyang
College of Biological & Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, P. R. China.
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China.
Langmuir. 2023 Aug 29;39(34):12153-12158. doi: 10.1021/acs.langmuir.3c01455. Epub 2023 Aug 15.
The monomer emission property of the tetraphenylethene (TPE) derivative is rarely reported, and its photoluminescence (PL) mechanism related to supramolecular self-assembly needs further in-depth research. Two long alkyl chain modified derivatives, the TPE derivative (TPE-C) and pyrene derivative (Pyrene-C), are designed and synthesized, which possess similar supramolecular assembly behavior but exhibit different PL properties. TPE-C not only forms self-assembly morphologies with monomer emission but also emits aggregation-induced emission (AIE). Moreover, the polymer microspheres containing TPE-C and Pyrene-C are prepared, which can dissolve or swell in different organic solvents. The changed binding effect of polymer chains achieves the luminescence transformation of TPE-C from AIE to monomer emission. This work hopefully can enrich luminescent materials based on the monomer emission of the TPE derivative and provide a new method for mechanism studies about supramolecular self-assembly and luminescence.
四苯乙烯（TPE）衍生物的单体发射特性鲜有报道，其与超分子自组装相关的光致发光（PL）机制需要进一步深入研究。设计并合成了两种长烷基链修饰的衍生物，即TPE衍生物（TPE-C）和芘衍生物（Pyrene-C），它们具有相似的超分子组装行为，但表现出不同的PL特性。TPE-C不仅形成具有单体发射的自组装形态，还表现出聚集诱导发光（AIE）。此外，制备了含有TPE-C和Pyrene-C的聚合物微球，它们能在不同有机溶剂中溶解或溶胀。聚合物链结合效果的改变实现了TPE-C从AIE到单体发射的发光转变。这项工作有望丰富基于TPE衍生物单体发射的发光材料，并为超分子自组装和发光的机制研究提供一种新方法。
