Various quinoid groups have been connected with the cyclopentadithiophene (CPDT) skeleton via azine linkage to form a new D–π–A system. These compounds revealed weak absorptions extending to 590–630 nm, corresponding to small HOMO–LUMO gaps of 1.97–2.10 eV. Their reduction potentials were strongly dependent on the quinone moieties, whereas the oxidation potentials were controlled by the CPDT moiety. Some of these compounds underwent oxidative polymerization under electrochemical conditions to yield polymers with a highly amphoteric character.
各种醌基通过
叠氮连接与
环戊二烯噻吩(CPDT)骨架相连,形成了一种新的 D-π-A 系统。这些化合物显示出延伸至 590-630 纳米的微弱吸收,对应于 1.97-2.10 eV 的小 HOMO-LUMO 间隙。它们的还原电位在很大程度上取决于醌分子,而氧化电位则由 CPDT 分子控制。其中一些化合物在电
化学条件下发生氧化聚合,生成具有高度两性特性的聚合物。