Thiophene-perfluoroarene copolymers

Thiophene-perfluoroarene copolymers have been described (06JA2536). Absorptions in the range 334—360 were reported. 

Fluoride activation of Si-C bonds toward electrophiles has recently been exploited to synthesise alternating thiophene-perfluoroarene copolymers without using transition metal catalysis. This has the advantage of leading to products that are devoid of even traces of metal residues <2006JA2536>. Here the electrophiles are perfluoroarenes (ttF) the potential nucleophilic sites are the 2- and 5-positions of 3,4-dibutoxy-2,5-bis(trimethylsilyl)thiophene. The reaction is initiated with catalytic fluoride ion, which is regenerated with each C-C bond formed (Equation 106). 

Wang Y, Watson MD (2006) Transition-metal-free synthesis of alternating thiophene-perfluoroarene copolymers. J Am Chem Soc 128 2536—2537... 

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