An Unexpected New Optimum in the Structure Space of DNA Solubilizing Single‐Walled Carbon Nanotubes
作者： Stephanie R. Vogel , Manfred M. Kappes , Frank Hennrich , Clemens Richert
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摘要: Here we report quantitative data on the amount of single-walled carbon nanotubes that can be suspended with oligodeoxynucleotides in aqueous buffer, together rate constants for thermal denaturation resulting DNA-nanotube complexes at elevated temperatures. Sequence motifs d(GT)n and d(AC)n n=2, 3, 5, 10, 20, or 40 were employed, both individually as equimolar mixtures complementary strands. Unexpectedly, greatest suspending efficiency was found mixture short, oligonucleotides d(GT)3 d(AC)3. Unlike efficiency, kinetic stability nanotube suspensions increases increasing chain length DNA, half life times >25 h 90 °C longest Our results identify a new, unexpected optimum DNA sequence space nanotubes. They also demonstrate power depends presence Exploratory assays suggest deposited site-selectively from formed short sequences.
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