Templating Ag on DNA/polymer hybrid nanowires: Control of the metal growth morphology using functional monomers |
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| Authors: | Said A. Farha Al-Said Reda Hassanien Jennifer Hannant Miguel A. Galindo Stela Pruneanu Andrew R. Pike Andrew Houlton Benjamin R. Horrocks |
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| Affiliation: | 1. School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK;2. National Institute for R&D of Isotopic and Molecular Technologies, 65-103 Donath Str., P.O. Box 700 RO-400293, Cluj-Napoca, Romania |
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| Abstract: | Ag nanowires and nanoparticles have been formed on hybrid λ-DNA/conducting polymer templates. The strong, but non-covalent, interaction of the conducting polymer with the double helix allowed us to incorporate chemical functionalities (alkynyl) into the DNA/conducting polymer strands by synthesis of functional monomers. Oxidative polymerisation of alkynyl-thienylpyrrole in the presence of λ-DNA produced conductive nanowires bearing alkyne groups; we show, using a combination of AFM, cAFM and EFM phase measurements that the alkyne functionality strong influences the subsequent templating reaction of Tollens’ reagent to produce uniform conductive nanowires comprised of many connected Ag clusters. |
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