A series of thia-bridged triarylamine[4]helicene-functionalized polynorbornenes P1, P2, and P3 were synthesized via ring-opening metathesis polymerization (ROMP). The polymers obtained undergo a reversible one-electron oxidation, in both solution and solid state, responding to the pH changes in the surrounding medium showing a clear reversible electrochromic behavior.
通过环烯烃开环重排聚合(ROMP)合成了一系列硫桥联的三芳基胺[4]螺环功能化聚去甲基脲P1、P2和P3。所得聚合物在溶液和固态中都经历可逆的单电子氧化反应,对周围介质的pH变化作出响应,表现出明显的可逆电致变色行为。