Direct observation of surface-mediated thioacetyl deprotection: covalent tethering of a thiol-terminated porphyrin to the Ag(100) surface |
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Authors: | Vaughan Owain P H Turner Mark Williams Federico J Hille Andreas Sanders Jeremy K M Lambert Richard M |
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Institution: | Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom. |
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Abstract: | Covalent tethering of macromolecules such as porphyrins to metal surfaces underpins bottom-up fabrication of systems intended for a variety of applications. Thiol linkages are especially useful but often need protection during macromolecule synthesis. By means of scanning tunneling microscopy, we directly observe the spontaneous deprotection of an acetyl-protected thioporphyrin upon contact with a silver surface, without the intervention of any solution-mediated chemistry. |
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