Intramolecular charge transfer induced by deprotonation of hydroxyl groups in π-conjugated polymers with π-deficient aromatic rings
作者:Isao Yamaguchi、Hidehito Mitsuno
DOI:10.1016/j.reactfunctpolym.2010.11.014
日期:2011.2
compounds suggests the expansion of the π-conjugation system along the polymer chain. The reaction of polymer-4 and model-2 with NaH caused the dehydration of the OH groups, which induced an intramolecular charge transfer (ICT) from the ONa group to the Tz ring. The ICT affected the optical properties of the polymers and the model compounds. The cast films of polymers obtained in this study underwent electrochemical
由对苯撑(Ph)和1,3,4-恶二唑(Oz)或4-辛基苯基-1,3,4-三唑(OctOz)环组成的π共轭聚合物[聚合物-1:(Ph-Oz)n和聚合物2:(Ph-OctTz)n ]以及由9,9-二己基-2,7-芴(Flu)和Oz或1-(4-羟苯基)-1,3,4-三唑(HOPhTz)组成的聚合物)通过聚合合成[聚合物3:(Ph-Oz-Py-Oz-Flu)n和聚合物4:(Ph-HOPhTz-Py-HOPhTz-Flu)n(Py = 2,5-吡啶)]的环。分别由多磷酸和Pd配合物催化。模型化合物(模型1:Ph-Oz-Py-Oz-Ph,模型2合成了Ph-HOPhTz-Py-HOPhTz-Ph和模型3:Ph-OctPhTz-Py-OctPhTz-Ph)。该事实λ最大的聚合物的波长均比模型化合物的更长表明沿着聚合物链的π共轭系统的扩展。的反应聚合物-4和模型-2用NaH引起OH基团的脱水,从而诱发从ON