溶液中的聚集体紫外-可见光谱——以三聚茚为例拓展谱学教学内容  

Extending Spectroscopy Content for Undergraduates by Exploring the UV-Visible Spectra of Aggregates in Solution from Truxene and Its Derivatives

作　　者：王璐雪 石建兵[1] 佟斌[1] 蔡政旭 董宇平[1] Wang Luxue;Shi Jianbing;Tong Bin;Cai Zhengxu;Dong Yuping(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,100081)

机构地区：[1]北京理工大学材料学院,北京100081

出　　处：《化学通报》2024年第12期1452-1456,共5页Chemistry

基　　金：国家自然科学基金项目(21875019)资助。

摘　　要：紫外-可见吸收光谱仪器成熟,检测结果可靠,在很多场合都有应用。紫外-可见吸收除了溶液态的单分子光谱外,溶液中的聚集体分子光谱也随着聚集诱导发光(AIE)染料的发展而逐渐发展。但是,具有聚集导致发光猝灭(ACQ)性质的常规染料分子在紫外-可见吸收测试中往往会忽略溶液中形成的聚集体。在本科教学过程中,往往以单分子的结构特征为主要探讨对象,将其吸收特征与这些结构联系起来,而未涉及溶液中的聚集体的紫外吸收特点。因此,本文以平面结构的三聚茚衍生物(ACQ染料分子)为探讨对象,以揭示溶液中单分子和聚集体的紫外-可见吸收光谱之区别,作为本科生学习紫外可见吸收光谱的有益补充。The UV-Vis absorption spectroscopy is a useful tool for broad applications due to its reliable accuracy.In addition to the single-molecule spectra of dyes in solution,the spectra of dyes in solution aggregated state have also gradually developed with the advancement of aggregation-induced emission(AIE).However,the phenomenon of aggregation in solution of conventional dye molecules with aggregation-caused quenching(ACQ)is often overlooked.In the textbook for undergraduates,the contents of UV-Vis absorption spectroscopy mainly focus on the relationship between single molecules’structures and their absorption features.The characteristics of aggregates in solution are seldom discussed.Therefore,in this paper,the planar structure of truxene(ACQ dyes)and its derivatives was chosen to highlight the differences in UV-Vis spectra between single molecules and aggregates in solution,serving as a beneficial supplement for undergraduates who want to be good at UV-Vis absorption spectroscopy.

关 键 词：紫外-可见吸收光谱 三聚茚 本科生 聚集体 

分 类 号：G642[文化科学—高等教育学] O657.32-4[文化科学—教育学]