Photoelectrochemical properties of donor-acceptor nanocomposite films composed of porphyrin-functionalized cup-shaped nanocarbon materials

Masataka Ohtani, Shunichi Fukuzumi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Porphyrin-functionalized cup-shaped nanocarbons (CNC-H2P) have been assembled onto nanostructured SnO2 films using an electrophoretic deposition method to examine the photoelectrochemical properties. The obtained CNC-H2P nanohybrid films were examined by a series of steady-state and time-resolved spectroscopic measurements and photoelectrochemical measurements. The resulting nanohybrid film afforded drastic enhancement in the photoelectrochemical performance as well as broader photoresponse in the visible region as compared with the reference CNC system without porphyrins. The enhancement of photocurrent generation may be caused by the efficient electron injection from the long-lived charge-separated state of CNC-H2P upon photoexcitation. This feature makes cup-shaped nanocarbon materials a useful candidate for developing efficient photoelectrochemical and photovoltaic cells.

Original languageEnglish
Pages (from-to)452-458
Number of pages7
JournalJournal of Porphyrins and Phthalocyanines
Volume14
Issue number5
DOIs
StatePublished - May 2010

Bibliographical note

Funding Information:
This work was partially supported by KOSEF/MEST through WCU project (R31-2008-000-10010-0) and a Grant-in-Aid (no. 19205019) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. We appreciate very much Prof. Prashant Kamat who kindly provided the experimental facilities at the Notre Dame Radiation Laboratory. Masataka Ohtani appreciates support from the Global COE program “Global Education and Research Center for Bio-Environmental Chemistry” of Osaka University.

Keywords

  • nanocarbon
  • photoelectrochemical properties

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