Synthesis and Characterization of a Block Copolymer Containing Regioregular Poly(3‐hexylthiophene) and Poly(γ‐benzyl‐L‐glutamate)

Abstract

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.

Synthesis and characterization of side-chain thermotropic liquid crystalline copolymers containing regioregular poly(3-hexylthiophene)

“…The data were obtained from an untreated device and from the device treated with 8 Â 10 À3 M of octyltrichlorosilane. We previously reported the synthesis and electronic properties of liquid crystalline P3HT diblock copolymers containing poly(gbenzyl-L-glutamate) [43,44] (57 mol% of P3HT) and poly(hexyl isocyanate) (10 mol% of P3HT) [45]. These diblock copolymers displayed mobilities of 7 Â 10 À4 cm 2 V À1 s À1 and 1 Â 10 À3 cm 2 V À1 s À1 respectively, in OFET.…”

Fabrication of a multi-charge generable poly(phenyl isocyanide)-block-poly(3-hexylthiophene) rod–rod conjugated copolymer

“…37,69,70 Herein, the emission properties of PPI(-QDMAENBA/DMAENBA)-b-P3HT block copolymer with a 40% degree of quaternization were investigated in the mixture solvents of THF and water. 37,69,70 Herein, the emission properties of PPI(-QDMAENBA/DMAENBA)-b-P3HT block copolymer with a 40% degree of quaternization were investigated in the mixture solvents of THF and water.…”

Poly(3-Hexylthiophene) Nanostructured Materials for Organic Electronics Applications

“…46 This polymer was synthesized by the combination of GRIM and ring opening polymerization of -benzyl-L-glutamate N -carboxyanhydride. 47 Using a different procedure, Bielawski's group also reported the synthesis of P3HT-b-PBLG. 73 A diblock copolymer containing P3HT and a side-chain liquid crystalline polymer was reported by Zhao (Fig.…”