Porphyrin-based molecular architectures for light energy conversion

Taku Hasobe, Hideyuki Murata, Shunichi Fukuzumi, Prashant V. Kamat

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We have constructed a series of supramolecular photovoltaic cells composed of multi-porphyrin arrays such as porphyrin-alkanethiolate monolayer protected-gold nanoparticles [H2PCnMPC: n is the number of methylene groups in the spacer], porphyrin dendrimers [DnPn], and porphyrin-peptide oligomers [P(H2P)n] and fullerene (C60) on nanostructured SnO2 electrodes (OTE/SnO2). These multi-porphyrin arrays form complexes with fullerene molecules and they form clusters in acetonitrile/toluene mixed solvent. The highly colored composite clusters are assembled as three-dimensional arrays onto nanostructured SnO2 films [denoted as OTE/SnO2/(multi-porphyrin array+C60)m] using an electrophoretic deposition method. These highly organized molecular assembly films attain drastic enhancement of light energy conversion properties as compared to the non-organized reference system. The maximum power conversion efficiency () of OTE/SnO2/(H2PC15MPC+C60)m reaches 1.5%, which is 45 times higher than that of the reference system (0.035%).

Original languageEnglish
Pages (from-to)39-51
Number of pages13
JournalMolecular Crystals and Liquid Crystals
Volume471
Issue number1
DOIs
Publication statusPublished - 2007 Jan
Externally publishedYes

Fingerprint

Porphyrins
energy conversion
Energy conversion
porphyrins
reference systems
Fullerenes
fullerenes
Dendrimers
Photovoltaic cells
photovoltaic cells
dendrimers
Toluene
Acetonitrile
oligomers
Oligomers
methylene
Gold
spacers
Peptides
Conversion efficiency

Keywords

  • Fullerene
  • Photovoltaic cell
  • Porphyrin
  • Supramolecular assembly

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Porphyrin-based molecular architectures for light energy conversion. / Hasobe, Taku; Murata, Hideyuki; Fukuzumi, Shunichi; Kamat, Prashant V.

In: Molecular Crystals and Liquid Crystals, Vol. 471, No. 1, 01.2007, p. 39-51.

Research output: Contribution to journalArticle

Hasobe, Taku ; Murata, Hideyuki ; Fukuzumi, Shunichi ; Kamat, Prashant V. / Porphyrin-based molecular architectures for light energy conversion. In: Molecular Crystals and Liquid Crystals. 2007 ; Vol. 471, No. 1. pp. 39-51.
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