Regioregular poly(3-hexyl-thiophene) helical self-organization on carbon nanotubes

Giulianini, Michele; Waclawik, Eric R.; Bell, John M.; De Crescenzi, Maurizio; Castrucci, Paola; Scarselli, Manuela; Motta, Nunzio
July 2009
Applied Physics Letters;7/6/2009, Vol. 95 Issue 1, p013304
Academic Journal
Mixtures of regioregular poly(3-hexyl-thiophene) (rrP3HT) and multiwall carbon nanotubes have been investigated by scanning tunneling microscopy in ultrahigh vacuum. Carbon nanotubes covered by rrP3HT have been imaged and analyzed, providing a clear evidence that this polymer self-assembles on the nanotube surface following geometrical constraints and adapting its equilibrium chain-to-chain distance. Largely spaced covered nanotubes have been analyzed to investigate the role played by nanotube chirality in the polymer wrapping, evidencing strong rrP3HT interactions along well defined directions.


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