EPR study of a place-exchange reaction on Au nanoparticles: two branches of a disulfide molecule do not adsorb adjacent to each other |
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| Authors: | Ionita Petre Caragheorgheopol Agneta Gilbert Bruce C Chechik Victor |
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| Institution: | Romanian Academy, Institute of Physical Chemistry I. G. Murgulescu, Bucharest, Romania. |
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| Abstract: | An EPR study of a place-exchange reaction of a diradical disulfide with butanethiol-protected Au nanoparticles showed that the two branches of the disulfide molecule do not adsorb adjacent to each other on the Au surface. The most likely mechanism includes adsorption of only one branch of the disulfide molecule in the exchange process. The exchange reaction was found to be zeroth-order with respect to the diradical, indicative of a dissociative "SN1"-type mechanism. |
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