Optical Properties of a Novel Carbon-Carbon Chain Polymer with Pendent Poly(thiophene)s
Chemistry and Biochemistry
The synthesis of a novel soluble carbon-carbon chain polymer with pendent terthiophene groups, poly(5-vinyl-2,2':5',2''-terthiophene) (PVT), is described. The solvent-cast thin films of PVT display strong blue-green photoluminescence and, thus, PVT is expected to show electroluminescence in this region. The terthiophene side chains in PVT cross-link when the polymer is oxidized in solution or as thin films with FeCl3 or SbCl5. Based on model studies we have proposed that terthiophene radical cations, initially generated upon doping, slowly couple with neighboring neutral species to yield the radical cations of sexithiophene. The neutralization of the doped polymer with triethylamine yielded an insoluble, cross-linked material. The UV irradiation of thin films of PVT results in cross-linking and insolubilization of the polymer. The mechanism of the photoinitiated cross-linking reaction is discussed.
Khanna, R. K.,
(1993). Optical Properties of a Novel Carbon-Carbon Chain Polymer with Pendent Poly(thiophene)s. Macromolecules, 26(25), 7076-7078.
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