electrochemical behaviour in solution and their electronic properties in solid state. Both ether and thioether compounds oxidise rather easily in solution, but nevertheless, they exhibit rather high ionisation potentials. This is a consequence of their crystal structure. Dioctylthioetherbenzothienobenzothiophene is rather sensitive to oxidation and degrades easily in close to ambient conditions. Dioctylethe
通过引入醚或
硫醚侧链,已合成了五种不同于二辛基苯并
噻吩并苯并噻吩的新型分子半导体,并以高收率获得了它们。它们的足够量的可用性允许研究它们在溶液中的电
化学行为以及它们在固态下的电子性能。醚和
硫醚化合物在溶液中都非常容易氧化,但是它们仍显示出很高的电离势。这是其晶体结构的结果。二辛基
硫醚苯并
噻吩并苯并噻吩对氧化非常敏感,并且在接近环境条件下容易降解。
二辛基醚苯并
噻吩并苯并噻吩更稳定。然而,其载流子迁移率仍然相当适中,约为0.5 cm 2 V-1 s -1,而在相同条件下,二辛基苯并
噻吩并苯并噻吩的二氧化
锡的浓度达到4 cm 2 V -1 s -1。差异由内在因素解释,如理论模型所示。