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Chirality of silver nanoparticles synthesized on DNA
Gabriel Shemer1, Olga Krichevski, Gil Markovich
1School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences and Department of Biochemistry, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 69978, Israel.
Abstract:
Silver nanocrystals grown on a poly(dG)-poly(dC) double stranded DNA scaffold displayed circular dichroism at their surface plasmon excitation band. This chiral plasmon signature was not observed in a control experiment where silver nanocrystals of similar size were produced without the DNA template and adsorbed to the DNA. It is concluded that the DNA templated Ag nanocrystals had a preferred structural handedness.
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