Abstract
We report end-to-end assembly for tuning the optical properties of a gold nanorod/spherebased on oligonucleotide hybridization. The rationale behind the selection of themercaptoalkyloligonucleotide molecule is based on the fact that the thiol group binds to theends of the nanorods, which further assemble in an end-to-end fashion throughhybridization with the target oligonucleotide. A highly selective, colorimetricpolynucleotide detection method based on mercaptoalkyloligonucleotide-modified goldnanorod/sphere probes is also reported.
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