Efficient photocurrent generation through a self-assembled monolayer of C60-mercaptophenylanthrylacetylene

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)711-715
Journal / PublicationJournal of Power Sources
Volume160
Issue number1
Publication statusPublished - 29 Sep 2006
Externally publishedYes

Abstract

A novel conjugated molecule, C60-mercaptophenylanthrylacetylene (C60-MPAA) has been self-assembled on a gold surface to form a highly ordered monolayer. The electrochemical properties of this molecule in solution or in a self-assembled monolayer (SAM) were investigated using cyclic voltammetry. A stable cathodic photocurrent was observed from a photoelectrochemical cell using the C60-MPAA SAM modified gold as the working electrode in the presence of methyl viologen (MV2+) as electron carrier. The quantum yield (14%) of the cell was obtained at a bias of -100 mV versus Ag/AgCl under the illumination of monochromatic light at 400 nm. The dependence of photocurrent on the potential bias applied to the self-assembled monolayer modified Au electrode indicated that electron flow from C60-MPAA to the counter electrode through the electron carriers. © 2006 Elsevier B.V. All rights reserved.

Research Area(s)

  • C60, Electrochemistry, Photocurrent generation, Quantum yield, Self-assembled monolayer