Powering a supramolecular machine with a photoactive molecular triad

Sourav Saha*, L. Erik Johansson, Amar H. Flood, Hsian Rong Tseng, Jeffrey I. Zink, J. Fraser Stoddart

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

The ability of a molecular Triad which uses TTF as the donor group (TTF-P-C60) to perform photo-to-electrical energy conversion was investigated. The design incorporates the efficient motifs of charge separation in TTF-based triads together with a disulfide-based tether for attachment to a gold electrode. The Triad was designed and synthesized in a modular fashion from its components in order to allow its electronic properties to be optimized according to Marcus theory by subsequent structure-property feedback loops. The photocurrent was recorded in both aqueous and organic solutions which was observed to be 0 V in acetonitrile bodes well for optimizing the system to obtain a true photocell that can generate an open-circuit photovoltage. The cyclic voltammogram (CV) of the Triad self-assembled monolayer (SAM) on a gold wire electrode shows a quasi-reversible peak at 680 mV assigned to the two-electron oxidation of the TTF unit.

Original languageEnglish (US)
Pages (from-to)87-90
Number of pages4
JournalSmall
Volume1
Issue number1
DOIs
StatePublished - Jan 2005

Keywords

  • Energy conversion
  • Fluorescence
  • Molecular devices
  • Pseudorotaxanes
  • Self-assembled monolayers

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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