Stabilization effect of single-walled carbon nanotubes on the functioning of photosynthetic reaction centers

Márta Dorogi, Zoltán Bálint, Csilla Mikó, Bertrand Vileno, Mirko Milas, Klára Hernádi, Forró László, György Váró, László Nagy

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The interaction between single-walled carbon nanotubes and photosynthetic reaction centers purified from purple bacterium Rhodobacter sphaeroides R-26 has been investigated. Atomic force microscopy studies provide evidence that reaction center protein can be attached effectively to the nanotubes. The typical diameter of the nanotube is 1-4 nm and 15 ± 2 nm without and with the reaction centers, respectively. Light-induced absorption change measurements indicate the stabilization of the P+(QAQ B)- charge pair, which is formed after single saturating light excitation after the attachment to nanotubes. The separation of light-induced charges is followed by slow reorganization of the protein structure. The stabilization effect of light-initiated charges by the carbon nanotubes opens a possible direction of several applications, the most promising being in energy conversion and storage devices.

Original languageEnglish
Pages (from-to)21473-21479
Number of pages7
JournalJournal of Physical Chemistry B
Volume110
Issue number43
DOIs
Publication statusPublished - Nov 2 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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