INVESTIGADORES
GERVALDO Miguel Andres
artículos
Título:
Porphyrin-Based Hole Conducting Electropolymer
Autor/es:
LIDDEL, P. A., GERVALDO, M., BRIDGEWATER J. W., KEIRSTEAD, A. E., LIN, S., MOORE, T.A., MOORE, A.L., GUST, D
Revista:
CHEMISTRY OF MATERIALS
Editorial:
American Chemical Society
Referencias:
Lugar: Columbus, OH, USA.; Año: 2008 vol. 20 p. 135 - 142
ISSN:
0897-4756
Resumen:
The monomer 5-(4-aminophenyl)-10,20-bis(2,4,6-trimethylphenyl)porphyrin was synthesized and found
to electropolymerize on platinum, indium tin oxide, and other electrodes to form a clear, semiconducting
film with strong absorption in the visible spectral region. The linear, hole-conducting polymer has a
unique structure, with porphyrin units linked to one another through the 5-(4-aminophenyl) nitrogen
atom and the carbon atom at the 15-position on the macrocyclic ring. The porphyrin macrocyclic ring is
thus an integral part of the linear polymer backbone. The oxidation potential of the film is 0.85 V and
the reduction potential is -1.12 V vs SCE. The absorption spectrum of the film resembles that of a
monomeric model porphyrin, but with significant peak broadening. Streak camera studies of the
fluorescence of the polymer yield a lifetime of 15 ps, indicating strong quenching of the porphyrin first
excited singlet state relative to that of the monomer. The properties of the polymer suggest that it may
be useful in sensors, catalysts, and solar energy conversion devices.
monomeric model porphyrin, but with significant peak broadening. Streak camera studies of the
fluorescence of the polymer yield a lifetime of 15 ps, indicating strong quenching of the porphyrin first
excited singlet state relative to that of the monomer. The properties of the polymer suggest that it may
be useful in sensors, catalysts, and solar energy conversion devices.
monomeric model porphyrin, but with significant peak broadening. Streak camera studies of the
fluorescence of the polymer yield a lifetime of 15 ps, indicating strong quenching of the porphyrin first
excited singlet state relative to that of the monomer. The properties of the polymer suggest that it may
be useful in sensors, catalysts, and solar energy conversion devices.
-1.12 V vs SCE. The absorption spectrum of the film resembles that of a
monomeric model porphyrin, but with significant peak broadening. Streak camera studies of the
fluorescence of the polymer yield a lifetime of 15 ps, indicating strong quenching of the porphyrin first
excited singlet state relative to that of the monomer. The properties of the polymer suggest that it may
be useful in sensors, catalysts, and solar energy conversion devices.