Synthesis, Structure, Aggregation-Induced Emission, Self-Assembly, and Electron Mobility of 2,5-Bis(triphenylsilylethynyl)-3,4-diphenylsiloles
作者:Zujin Zhao、Dandan Liu、Faisal Mahtab、Linyuan Xin、Zhongfang Shen、Yong Yu、Carrie Y. K. Chan、Ping Lu、Jacky W. Y. Lam、Herman H. Y. Sung、Ian D. Williams、Bing Yang、Yuguang Ma、Ben Zhong Tang
DOI:10.1002/chem.201003382
日期:2011.5.16
stability. Although, their solutions were weakly emissive, their nanoparticle suspensions and thin films emitted intense blue‐green light upon photoexcitation, demonstrating a novel feature of aggregation‐induced emission (AIE). Polarized emissions were observed in the silole crystals. The addition of solvents, which did not dissolve the silole molecules, into silole‐containing solutions caused self‐assembly
2,5-双(三苯基甲基)-3,4- diphenylsiloles具有不同1,1-二取代基[XYSi(CPH)2(C CC SIPH 3)2](Ph =苯基)是通过2,5-二溴-3,4-二苯基硅氧烷与三苯基甲硅烷基乙炔的Sonogashira偶联高产率合成的,其中两个在结晶学上得到了表征。晶体结构和理论计算表明,新的硅烷分子比2,5-二芳基硅烷具有更高的共轭。由于三苯基甲硅烷基乙炔基的吸电子作用,它们具有较低的HOMO和LUMO能级。循环伏安法分析显示低电子亲和力,可与全氟芳基硅酮相媲美。B3LYP / 6-31 *的计算表明,新的硅棒具有大的重组能,可用于电子和空穴的转移以及高电子迁移率。迁移率高达1.2×10 -5 cm 2 V -1 s-1是由瞬态电致发光法,这是大约比三(8-羟基喹啉)铝的五倍更高获得,一种广泛使用的电子传输材料,在相同条件下。所有的硅烷分子都具有高