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- W2021944868 abstract "We report two novel approaches for fabricating self-assembled chains of end-to-end linked Au nanorods separated by a nanogap. In one approach, bi-functional cysteine end-capped oligopeptides of different lengths are used as the linking agent. The widths of the produced nanogaps scale with the length and tertiary structure of the peptide linker. Functionalized oligopeptides containing an acetylene group are also employed as a linker, and the functional group is uniquely identified using surface-enhanced Raman spectroscopy. The development of an oligopeptide-linking platform is motivated by the ease of synthesis and high modularity of peptides; these features enable the possibility to integrate diverse functionality into molecular nanogap junctions – synthesized in water. The stepwise nanochain formation is followed via the evolution of the longitudinal plasmon absorption band in combination with transmission electron microscopy. The reaction rate and extent is tuned by controlling the concentration of the stabilizing CTAB surfactant in the solution. At very low surfactant concentrations, spontaneous end-to-end linking of the Au nanorods is observed even in the absence of linking peptide. The assembled AuNRs may act as next-generation electrodes in a platform for molecular electronics and synthetic biology." @default.
- W2021944868 created "2016-06-24" @default.
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- W2021944868 date "2012-06-01" @default.
- W2021944868 modified "2023-09-26" @default.
- W2021944868 title "End-to-end assembly of gold nanorods via oligopeptide linking and surfactant control" @default.
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- W2021944868 doi "https://doi.org/10.1016/j.jcis.2012.03.022" @default.
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