the first and second oxidation potentials (ΔE1–2) of 2E2PEt and 2E3PEt were found to be larger than that of the previously synthesized ProDOT tetramer 4PHex. These co-oligomers gave the fairly stable radical cations 2E2PEt•+ and 2E3PEt•+ by chemical oxidation with AgSbF6. The disproportionation of 2E2PEt•+ and 2E3PEt•+ into neutral and dicationic species, which was observed for 4PHex•+, was inhibited
共低聚物由两个3,4-亚乙基(EDOT)单元和两个或三个-3,4-
丙烯(ProDOT)单元,即2E2P的Et和2E3P的Et,都是新与ProDOT三聚体合成在一起3P我。关于循环伏安法的基础上,所述第一和第二氧化电势(Δ之间的间隙È 1-2的)2E2P的Et和2E3P的Et被发现是比预先合成ProDOT四聚体的较大4P十六进制。这些共聚低聚物提供了相当稳定的自由基阳离子2E2P Et •+和2E3PEt •+通过AgSbF 6的
化学氧化。的歧化2E2P的Et •+和2E3P的Et •+到空档和双阳离子种,其中观察到4P六角•+ ,在具有较大的Δ协议被抑制ë 1-2。此外,π二聚体( 3P Me) 2 2 +,( 2E2P Et) 2 2+和( 2E3P E) 2 2+的形成紫外可见近红外光谱在低温下在
二氯甲烷溶液中可以清楚地观察到。此外,2E2P Et •+和2E3P Et •+的π-二聚焓大于3P