Derivatives of tris-fused TTF extended with two ethanediylidenes (5), tris- and pentakis-fused TTFs extended with two thiophene-2,5-diylidenes (6–9) were successfully synthesized. Cyclic voltammograms of the tetrakis(n-hexylthio) derivative of 5 and 7 (5d, 7d) consisted of two pairs of two-electron redox waves and two pairs of one-electron redox waves. On the other hand, four pairs of two-electron redox waves and two pairs of one-electron redox waves were observed for the tetrakis(n-hexylthio) derivative of 9 (9d). Coin-type cells using the bis(ethylenedithio) derivatives of 5 (5b), 6 (6b) and the tetrakis(methylthio) derivatives of 5 (5c) and 8 (8c) as positive electrode materials showed initial discharge capacities of 157–190 mAh g−1 and initial energy densities of 535–680 mAh g−1. The discharge capacities after 40 cycles were 64–86% of the initial discharge capacities.
三联
噻吩并三
噻吩并二
乙烯基扩展衍
生物 (
5)、三联
噻吩并五
噻吩并二
噻吩-2,5-二基扩展衍
生物 (
6-
9) 成功合成。四乙
硫代己烷基衍
生物的
5 和
7 (
5d,
7d) 的循环伏安图包含两对双电子氧化还原波和两对单电子氧化还原波。另一方面,四对双电子氧化还原波和两对单电子氧化还原波被观察到在四乙
硫代己烷基衍
生物的
9 (
9d) 中。使用
5 (
5b) 和
6 (
6b) 的二
乙烯基硫代衍
生物以及
5 (
5c) 和
8 (
8c) 的四甲
硫代衍
生物作为正极材料的硬币型电池显示出初始放电容量为157-190mAh/g和初始能量密度为535-680mAh/g。40个循环后的放电容量为初始放电容量的64-86%。