Abstract

Three Tetrathiafulvalene (TTF)-assembled thiophene molecules were synthesized with the different linkages of σ bridge via Steglich esterification and classical SN₂ reaction. The results of UV and CV showed the different substitution effects existed in the new molecules formed by the molecule assembling. Among the new molecules, TTF-Th-2 (TTF-methylene-thiophene), linkage in the shortest σ bridge, exhibited the most obvious substitution effects. Meanwhile, the result of theoretical calculation indicated that TTF-Th-2 exhibited lower bandgap with the evident electron transfer in the LUMO energy level.

Graphic abstract

Synthesis and Characterization of TTF-σ-Thiophene Dyads

中文翻译：

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四硫富瓦烯-σ-噻吩二联体的合成与表征

摘要

通过Steglich酯化反应和经典的SN ₂反应，合成了3个TTF组装的噻吩富勒烯分子。UV和CV结果表明，分子组装形成的新分子存在不同的取代作用。在新分子中，最短的σ桥连接的TTF-Th-2（TTF-亚甲基噻吩）表现出最明显的取代作用。同时，理论计算结果表明，TTF-Th-2在LUMO能级上具有较低的带隙，并且具有明显的电子转移。

图形摘要

TTF-σ-噻吩二烯的合成与表征