Diverse Redox-Active Molecules Bearing O-, S-, or Se-Terminated Tethers for Attachment to Silicon in Studies of Molecular Information Storage

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DOI: 10.1021/jo034944t Publication Date: 2004-02-27T06:07:00Z
ABSTRACT
A molecular approach to information storage employs redox-active molecules tethered an electroactive surface. Attachment of the surfaces requires control over nature tether (linker and surface attachment group). We have synthesized a collection bearing different linkers anchor groups in free or protected form (hydroxy, mercapto, S-acetylthio, Se-acetylseleno) for such as silicon, germanium, gold. The exhibit number cationic oxidation states, including one (ferrocene), two [zinc(II)porphyrin], three [cobalt(II)porphyrin], four (lanthanide triple-decker sandwich compound). Electrochemical studies monolayers variety attached Si(100) electrodes indicate that regular mode (via Si-X bond, X = O, S, Se), relatively homogeneous organization, robust reversible electrochemical behavior. acetyl protecting group undergoes cleavage during deposition process, enabling silicon via thio seleno without handling thiols selenols.
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