Positive charge carriers on isolated chains of MEH-PPV with broken conjugation: Optical absorption and mobility
Article Abstract:
The pulse radiolysis of oxygen-saturated dilute solutions of poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene]s in benzene showed charge-transfer from the solvent radical cation to the polymer, yielding positive charge carriers on the isolated chains. The introduction of conjugated breaks decreased the charge mobility strongly, which was attributed to the disruption of the pi conjugation and/or the conformational disorder caused by the flexibility of the chains at the sites of conjugation breaks.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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The disperse charge-carrier kinetics in regioregular poly(3-hexythiophene)
Article Abstract:
The pulse-radiolysis time-resolved microwave conductivity (PR-TRMC) technique is applied to study the charge-carrier recombination in two different samples of regio-regular P3HT obtained from Merck and sigma-Aldrich. It is shown that the lifetime of the charge carriers was determined by the concentration of electron acceptors.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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VIS/NIR absorption spectra of positively charged oligo(phenylenevinylene)s and comparison with time-dependent density functional theory calculations
Article Abstract:
A combined experimental and theoretical study of the optical properties of positively charged unsubstituted and dialkoxy-substituted phenylenevinylene (PV) oligomers in solution is presented. Cations of PV oligomers were produced by irradiation of a solution with high-energy electron pulses.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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