Preparation and Characterization of Silica-coated Gold Nanoflowers (AuNFs) with Raman Dye Encoding 


Vol. 35,  No. 9, pp. 2765-2768, Sep.  2014
10.5012/bkcs.2014.35.9.2765


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  Abstract

Flower-like Au nanoparticles, so-called Au nanoflowers (AuNFs), were synthesized by simply adding ascorbic acid to a gold acid solution in the presence of a chitosan biopolymer. The chitosan-entangled AuNFs exhibited strong plasmon absorption in the near-infrared (NIR) wavelength due to the aggregation of primary Au nanoparticles. The chitosan-entangled AuNFs were preferentially adsorbed by Raman-active 2-chlorothiophenol (CTP) molecules, and the CTP-encoded AuNFs (AuNF-CTPs) were subsequently coated with a thin silica layer by a sol-gel reaction with Si alkoxides. The silica-coated AuNFs (AuNF-CTPs@silica) exhibited the distinct Raman signals of adsorbed CTP molecules, as a potential nanoprobe with surface-enhanced Raman scattering (SERS).

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  Cite this article

[IEEE Style]

J. Yoo and S. Lee, "Preparation and Characterization of Silica-coated Gold Nanoflowers (AuNFs) with Raman Dye Encoding," Bulletin of the Korean Chemical Society, vol. 35, no. 9, pp. 2765-2768, 2014. DOI: 10.5012/bkcs.2014.35.9.2765.

[ACM Style]

Jihye Yoo and Sang-Wha Lee. 2014. Preparation and Characterization of Silica-coated Gold Nanoflowers (AuNFs) with Raman Dye Encoding. Bulletin of the Korean Chemical Society, 35, 9, (2014), 2765-2768. DOI: 10.5012/bkcs.2014.35.9.2765.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949