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.
|Number of pages||5|
|Journal||Journal of Physical Chemistry B|
|Publication status||Published - 1999|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry