硅烷桥联四苯乙烯-寡聚噻吩衍生物的结构与光谱性质  

Structure and Photophysical Properties of Silane Bridged Tetraphenylethylene-Oligothiophene Derivatives

作　　者：余富欢 周志宽 谢威 周传庭 盖立志 卢华[1] Yu Fuhuan;Zhou Zhikuan;Xie Wei;Zhou Chuanting;Gai Lizhi;Lu Hua(Key Laboratory of Organosilicon Chemistry and Material Technology,Ministry of Education,College of Material Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 311121)

机构地区：[1]杭州师范大学材料与化学化工学院有机硅化学及材料技术教育部重点实验室,杭州311121

出　　处：《有机化学》2023年第10期3652-3660,共9页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(Nos.21871072,21801057);杭州市领军型创新创业团队(No.TD2020015)资助项目.

摘　　要：设计合成了一系列硅烷桥联四苯乙烯(TPE)-寡聚噻吩衍生物.硅烷取代基为甲基和苯基,寡聚噻吩单元中噻吩数量为1~3,通过空间位阻效应和电子效应调控分子的固态发光性质.具有苯基取代基的硅烷和二噻吩分子表现出高达64.5%的固态发光.含1或2个噻吩单元的分子的固态和液态荧光性质类似四苯乙烯,而含3个噻吩的分子的发光则主要来自于三噻吩,其在液态和聚集态分别有1.4%和14%的发光效率.苯基硅烷桥联三噻吩-四苯乙烯分子的聚集体具有检测硝基爆炸物的能力和防伪应用潜力.A series of silane-bridged tetraphenylethene(TPE)-oligothiophene derivatives were synthesized.The silane substituents varied from methyl to phenyl groups,while the number of thiophene units in the oligothiophene segment was 1 to 3.The solid-state luminescence properties of the molecules were regulated by steric hindrance and electronic effects.Phenyl substituted silane-bridged bithiophene(BT)-TPE molecules exhibited up to 64.5%solid-state luminescence.Molecules containing 1 or 2 thiophene units exhibited fluorescence properties similar to TPE in both solid and liquid states,while the emission of molecules containing 3 thiophene units mainly came from terthiophene(TT)with luminescence efficiencies of 1.4%and 14%in liquid and aggregated states,respectively.The aggregate of phenyl substituted silane-bridged TT-TPE molecules exhibited potential for detecting nitro explosives and anti-counterfeiting applications.

关 键 词：硅烷 四苯乙烯 寡聚硅烷 荧光 

分 类 号：O626[理学—有机化学]