具有聚集诱导发光性能的四苯乙烯酰胺衍生物的合成与性能研究

文章将四苯乙烯基与己氧基苯通过酰胺键连接起来,合成了四苯乙烯酰胺衍生物。主要利用紫外-可见吸收光谱仪、荧光光谱仪、热重分析仪、示差扫描量热仪、扫描电镜、热台偏光显微镜等表征手段对该衍生物的光物理性能、热性能、聚集诱导发光性能和自组装行为进行了研究。研究结果表明,所合成的化合物在紫外光激发下发射强烈的蓝色荧光;其热失重温度达到359℃,显示出较高的热稳定性;化合物样品在熔融和冷却过程中均能观察到明显的液晶织构,说明其具有明显的液晶性;化合物分子在不同的溶剂组成中可自组装形成棒状或球状形貌不同的聚集体结构。

Synthesis and Properties of Tetraphenylethylene Derivatives with Aggregation-induced Emission and Different Self-assembly

As one class of the most important aggregation-induced emission materials, tetraphenylethylene derivatives have been widely used in organic light-emitting diodes and sensors with excellent photophysical and sensing properties. Tetraphenylethylene and 4-hexyloxybenzoic acid were combined together to synthesize a new compound with aggregation-induced emission (AIE) effect and self-assembly properties. In this work, the thermal, photophysical and self assembly properties were mainly characterized by UV-vis absorption spectroscopy, fluorescence spectroscopy, thermal gravimetric analysis, differential scanning calorimetry, polarizing optical microscopy (POM), and scanning electron microscopy. The results showed that the compound emitted strong fluorescence, possessed high thermal stability, exhibited thermotropic liquid crystalline phase and formed different self assembly structures.