Synthesis and Characterization of Soluble Silyl End-capped Arene-Thiophene Co-Oligomers
作者:Jung Hei Choi、Eunae Kim、Ung Chan Yoon、Hyang-Yeol Lee
DOI:10.1002/bkcs.10257
日期:2015.5
Soluble dimethyl‐n‐octylsilyl end‐capped arene‐thiophene oligomers with the central unit including phenyl, biphenyl, fluorine, and naphthalene were synthesized by Stille reaction. The optical, electrochemical, and thermal properties of the oligomers were then measured. The absorption maxima of the arene‐thiophene oligomers in dilute solutions were close to that obtained for DSi‐4T (λabs = 403 nm).
通过Stille反应合成了中心单元包括苯基,联苯,氟和萘的可溶性二甲基n正辛基甲硅烷基封端的芳烃噻吩低聚物。然后测量低聚物的光学,电化学和热性质。稀溶液中芳烃-噻吩低聚物的吸收最大值接近于DSi-4T的吸收最大值(λabs = 403 nm)。他们在DSi-TTPTT,DSi-TTPPTT,DSi-TTFTT和DSi-TTNTT的溶液中显示出良好分辨的荧光光谱,且在445、446、448和450 nm处具有最大发射, 分别。最高占据分子轨道(HOMO)能级分别确定为-5.29,-5.33,-5.27和-5.29 eV。因此,所有共聚体的HOMO能级均低于DSi-6T的−5.14 eV 。芳烃-噻吩低聚物的热稳定性通过差示扫描量热法(DSC)和热重分析(TGA)进行了研究。除DSi-TTPTT以外,TGA结果表明,在约400°C时失重达5%,这表明其热稳定性很高。二甲基正辛基甲硅烷基末端取