Anodic oxidation of difluorenyls bridged through a dimethylsilyl group and of the 9-trimethylsilyl fluorene: Towards new three-dimensional polyfluorenes

摘要

Anodic oxidation of difluorenes bridged by dimethylsilyl moieties leads to the formation of insoluble electroactive films. Compared to classical polyfluorenes and poly(9,9'-difluorenes), the polymer bridged through Si(CH_3)_2 or substituted by Si(CH_3)_3 units are more stable towards oxidation, their yield of polymerization are higher and the conjugation length deduced by their lambda_(max) UV-vis absorption bands under their neutral state are more important.