Bioinspired detection of light using a porphyrin-sensitized single-wall nanotube field effect transistor

David S. Hecht, Robert J A Ramirez, Mikhail Briman, Erika Artukovic, Kelly S. Chichak, J. Fraser Stoddart, George Grüner*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

202 Scopus citations

Abstract

Single-wall carbon nanotube (SWNT) field effect transistors (FETs), functionalized noncovalently with a zinc porphyrin derivative, were used to directly detect a photoinduced electron transfer (PET) within a donor/acceptor (D/A) system. We report here that the SWNTs act as the electron donor and the porphyrin molecules as the electron acceptor. The magnitude of the PET was measured to be a function of both the wavelength and intensity of applied light, with a maximum value of 0.37 electrons per porphyrin for light at 420 nm and 100 W/m 2. A complete understanding of the photophysics of this D/A system is necessary, as it may form the basis for applications in artificial photosynthesis and alternative energy sources such as solar cells.

Original languageEnglish (US)
Pages (from-to)2031-2036
Number of pages6
JournalNano letters
Volume6
Issue number9
DOIs
StatePublished - Sep 1 2006

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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