Synthesis of polymers containing regularly distributed tetrathia--elicene units along the backbone (pages 4704–4710)
Fabio Fenili, Clara Rigamonti, Alberto Bossi, Paolo Ferruti, Amedea Manfredi, Stefano Maiorana, Clara Baldoli, Silvia Cauteruccio, Emanuela Licandro and Elisabetta Ranucci
Article first published online: 20 SEP 2010 | DOI: 10.1002/pola.24260
The synthesis of the new polymer 6, formed of alternating tetrathia--helicene and N,N′-bis(β-mercaptoethyl)piperazine units is described. The synthetic strategy used was the conjugated Michael addition of N,N′-bis(β-mercaptoethyl)piperazine to cyanovinyl substituted tetrathia--helicene 2. This is the first example of polymer material bearing helicene units regularly distributed along the polymer backbone. The optical properties, the film formation and the morphology of the polymer containing tetratia--helicenes are also reported.