Carotene as a molecular wire: Conducting atomic force microscopy

G. Leatherman, E. N. Durantini, D. Gust, T. A. Moore, A. L. Moore, S. Stone, Z. Zhou, P. Rez, Y. Z. Liu, S. M. Lindsay

Research output: Contribution to journalArticlepeer-review

214 Citations (Scopus)


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
Pages (from-to)4006-4010
Number of pages5
JournalJournal of Physical Chemistry B
Issue number20
Publication statusPublished - May 20 1999

ASJC Scopus subject areas

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

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