Carotene as a Molecular Wire: Conducting Atomic Force Microscopy
نویسندگان
چکیده
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.
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