Carotene as a molecular wire: Conducting atomic force microscopy

G. Leatherman, E. N. Durantini, D. Gust, Thomas Moore, Ana Moore, S. Stone, Z. Zhou, Peter Rez, Y. Z. Liu, Stuart Lindsay

Research output: Contribution to journalArticle

214 Scopus citations

Abstract

A conducting atomic force microscope was used to measure the electrical properties of carotenoid molecules attached to a gold electrode. The thiolated carotene molecules were embedded in insulating n-alkanethiol self-assembled monolayers. At a contact force of a few nanoNewtons, a carotenoid molecule behaves ohmically with a resistance of approximately 4.2 ± 0.7 GΩ, over a million times more conductive than an alkane chain of similar length. Modes of electron transport are discussed.

Original languageEnglish (US)
Pages (from-to)4006-4010
Number of pages5
JournalJournal of Physical Chemistry B
Volume103
Issue number20
DOIs
StatePublished - May 20 1999

ASJC Scopus subject areas

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

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