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Synthesis and Characterization of a Block Copolymer Containing Regioregular Poly(3‐hexylthiophene) and Poly(γ‐benzyl‐ L ‐glutamate)
Author(s) -
Hundt Nadia,
Hoang Quan,
Nguyen Hien,
Sista Prakash,
Hao Jing,
Servello John,
Palaniappan Kumaranand,
Alemseghed Mussie,
Biewer Michael C.,
Stefan Mihaela C.
Publication year - 2011
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201000502
Subject(s) - copolymer , materials science , polymer chemistry , polythiophene , polymerization , solvatochromism , solvent , ring opening polymerization , chemical engineering , polymer , organic chemistry , conductive polymer , chemistry , composite material , engineering
Poly(3‐hexylthiophene)‐ b ‐poly(γ‐benzyl‐ L ‐glutamate) (P3HT‐ b ‐PBLG) rod–rod diblock copolymer was synthesized by a ring‐opening polymerization of γ‐benzyl‐ L ‐glutamate‐ N ‐carboxyanhydride using a benzylamine‐terminated regioregular P3HT macroinitiator. The opto‐electronic properties of the diblock copolymer have been investigated. The P3HT precursor and the P3HT‐ b ‐PBLG have similar UV–Vis spectra both in solution and solid state, indicating that the presence of PBLG block does not decrease the effective conjugation length of the semiconducting polythiophene segment. The copolymer displays solvatochromic behavior in THF/water mixtures. The morphology of the diblock copolymer depends upon the solvent used for film casting and annealing results in morphological changes for both films deposited from chloroform and trichlorobenzene.