The Dependence of Electron Transfer Efficiency on the Conformational Order in Organic Monolayers

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The electron transfer through an organized organic monolayer of alkyl chains adsorbed on a silicon wafer has been studied.The silicon was used as an electrode in a three-electrode electrochemical cell, and the current versus voltage response was measured. The results show that when the chains in the monolayer are in the ``all trans'' configuration, the charge transfer efficiency is higher than when the chains have a ``gauche'' configuration. A mechanism rationalizing all the observations is suggested.

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