高等学校化学学报2024，Vol.45Issue(7)：78-91,14.DOI:10.7503/cjcu20240051
桥联氟代四苯基乙烯化合物的合成、发光和刺激响应性质
Synthesis,Photoluminescence and Stimulus-responsiveness Properties of Bridged Fluorinated Tetraphenylethene Compounds
摘要
Abstract
Six fluorinated bis-tetraphenylethene(bis-FTPE)compounds were synthesized through the condensation of tetraphenylethene-based formaldehyde and ethylenediamine and further reduction and then acidification.The bridging groups are imine(compounds 1 and 2),amine(compounds 3 and 4)and quaternary ammonium salt(compounds 5 and 6)moieties,respectively.It has been found that the fluorine atom(s),different bridging groups and substitution positions exhibit tuning effect on the luminescence properties of the compounds.The emission wavelengths of compounds 1 and 2 are essentially the same as that of the parent tetraphenylethene(TPE),and the luminescence quantum yield of compound 2(38%)is higher than that of TPE(23%),indicating that the bridge/fluorination strategy can precisely maintain the emission wavelength of TPE while improving the emission intensity.Compounds 1,2,5 and 6 have mechanochromic luminescence properties and compounds 3 and 4 exhibit acidochro-mic luminescence properties.Paper strips made of compound 3 can readily distinguish hydrochloric acid,acetic acid and trifluoroacetic acid by the emission color.These results suggest that the fluorination/bridge strategy may be applied to synergistically and precisely tune the emission and stimulus-responsiveness properties of such compounds via intra-and intermolecular interactions to adjust the molecular packing and the rotations of the phenyl groups of these compounds.关键词
聚集诱导发光/氟代/桥联/四苯基乙烯/刺激响应Key words
Aggregation-induced emission/Fluorination/Bridging/Tetraphenylethene/Stimuli-responsiveness分类
化学引用本文复制引用
董一然,李凤姣,苗金玲,聂永,李天瑞,许春月,刘威,刘广宁,蒋绪川..桥联氟代四苯基乙烯化合物的合成、发光和刺激响应性质[J].高等学校化学学报,2024,45(7):78-91,14.基金项目
山东省自然科学基金(批准号:ZR2020MB001,ZR2022MB107)资助.Supported by the Natural Science Foundation of Shandong Province,China(Nos.ZR2020MB001,ZR2022MB107). （批准号:ZR2020MB001,ZR2022MB107）
