Enhancement of light-energy conversion efficiency by multi-porphyrin arrays of porphyrin-peptide oligomers with fullerene clusters

Taku Hasobe; Prashant V. Kamat; Vincent Troiani; Nathalie Solladié; Tae Kyu Ahn; Seong Keun Kim; Dongho Kim; Anusorn Kongkanand; Susumu Kuwabata; Shunichi Fukuzumi

doi:10.1021/jp045246v

Enhancement of light-energy conversion efficiency by multi-porphyrin arrays of porphyrin-peptide oligomers with fullerene clusters

Taku Hasobe, Prashant V. Kamat, Vincent Troiani, Nathalie Solladié, Tae Kyu Ahn, Seong Keun Kim, Dongho Kim, Anusorn Kongkanand, Susumu Kuwabata, Shunichi Fukuzumi

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

157 Scopus citations

Abstract

Organic photovoltaic cells using supramolecular complexes of porphyrin-peptide oligomers (porphyrin-functionalized α-polypeptides) with fullerene demonstrate remarkable enhancement in the photoelectrochemical performance as well as broader photoresponse in the visible and near-infrared regions by increasing the number of porphyrin units in α-polypeptide structures. A high power conversion efficiency (η) of 1.3% and a maximum incident photon-to-photocurrent efficiency (IPCE) of 42% were attained using composite clusters of porphyrin-peptide octamer and fullerene. These results clearly show that the formation of a molecular assembly between fullerene and multi-porphyrin arrays with a polypeptide backbone controls the electron transfer efficiency in the supramolecular complex, which is essential for the light-energy conversion.

Original language	English
Pages (from-to)	19-23
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	1
DOIs	https://doi.org/10.1021/jp045246v
State	Published - 13 Jan 2005

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title = "Enhancement of light-energy conversion efficiency by multi-porphyrin arrays of porphyrin-peptide oligomers with fullerene clusters",

abstract = "Organic photovoltaic cells using supramolecular complexes of porphyrin-peptide oligomers (porphyrin-functionalized α-polypeptides) with fullerene demonstrate remarkable enhancement in the photoelectrochemical performance as well as broader photoresponse in the visible and near-infrared regions by increasing the number of porphyrin units in α-polypeptide structures. A high power conversion efficiency (η) of 1.3% and a maximum incident photon-to-photocurrent efficiency (IPCE) of 42% were attained using composite clusters of porphyrin-peptide octamer and fullerene. These results clearly show that the formation of a molecular assembly between fullerene and multi-porphyrin arrays with a polypeptide backbone controls the electron transfer efficiency in the supramolecular complex, which is essential for the light-energy conversion.",

author = "Taku Hasobe and Kamat, {Prashant V.} and Vincent Troiani and Nathalie Solladi{\'e} and Ahn, {Tae Kyu} and Kim, {Seong Keun} and Dongho Kim and Anusorn Kongkanand and Susumu Kuwabata and Shunichi Fukuzumi",

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T1 - Enhancement of light-energy conversion efficiency by multi-porphyrin arrays of porphyrin-peptide oligomers with fullerene clusters

AU - Hasobe, Taku

AU - Kamat, Prashant V.

AU - Troiani, Vincent

AU - Solladié, Nathalie

AU - Ahn, Tae Kyu

AU - Kim, Seong Keun

AU - Kim, Dongho

AU - Kongkanand, Anusorn

AU - Kuwabata, Susumu

AU - Fukuzumi, Shunichi

PY - 2005/1/13

Y1 - 2005/1/13

N2 - Organic photovoltaic cells using supramolecular complexes of porphyrin-peptide oligomers (porphyrin-functionalized α-polypeptides) with fullerene demonstrate remarkable enhancement in the photoelectrochemical performance as well as broader photoresponse in the visible and near-infrared regions by increasing the number of porphyrin units in α-polypeptide structures. A high power conversion efficiency (η) of 1.3% and a maximum incident photon-to-photocurrent efficiency (IPCE) of 42% were attained using composite clusters of porphyrin-peptide octamer and fullerene. These results clearly show that the formation of a molecular assembly between fullerene and multi-porphyrin arrays with a polypeptide backbone controls the electron transfer efficiency in the supramolecular complex, which is essential for the light-energy conversion.

AB - Organic photovoltaic cells using supramolecular complexes of porphyrin-peptide oligomers (porphyrin-functionalized α-polypeptides) with fullerene demonstrate remarkable enhancement in the photoelectrochemical performance as well as broader photoresponse in the visible and near-infrared regions by increasing the number of porphyrin units in α-polypeptide structures. A high power conversion efficiency (η) of 1.3% and a maximum incident photon-to-photocurrent efficiency (IPCE) of 42% were attained using composite clusters of porphyrin-peptide octamer and fullerene. These results clearly show that the formation of a molecular assembly between fullerene and multi-porphyrin arrays with a polypeptide backbone controls the electron transfer efficiency in the supramolecular complex, which is essential for the light-energy conversion.

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Enhancement of light-energy conversion efficiency by multi-porphyrin arrays of porphyrin-peptide oligomers with fullerene clusters

Abstract

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