TY - JOUR
T1 - Porphyrin-based hole conducting electropolymer
AU - Liddell, Paul A.
AU - Gervaldo, Miguel
AU - Bridgewater, James W.
AU - Keirstead, Amy E.
AU - Lin, Su
AU - Moore, Thomas
AU - Moore, Ana
AU - Gust, Devens
PY - 2008/1/8
Y1 - 2008/1/8
N2 - 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 monomelic 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.
AB - 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 monomelic 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.
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U2 - 10.1021/cm7022955
DO - 10.1021/cm7022955
M3 - Article
AN - SCOPUS:39149141560
SN - 0897-4756
VL - 20
SP - 135
EP - 142
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 1
ER -