In Situ Spectroelectrochemical and Rotating Ring−Disk Electrode Studies on the Initial States in the Reductive Electropolymerization of Poly(p-phenylene vinylene)

摘要: The reductive coupling reactions in electrochemical polymerization of poly(p-phenylene vinylene) (PPV) have been studied by situ UV−vis spectroscopy using lithographic galvanic microstructured metal foils (LIGA structure) as the working electrode, UV−vis−ESR spectroscopy, and rotating ring−disk electrode (RRDE) technique. polymer film was synthesized reduction monomer α,α,α‘,α‘-tetrabromo-p-xylene (1) dimethylformamide tetraethylammonium tetrafluoroborate supporting electrolyte. results show that 1 takes place two steps. first step is a two-electron process leading to formation intermediates stay solution without precipitation onto surface. second reaction these produce oligomers which precipitate surface electrode. It observed material, cell design, temperature marked influence on valu...