Preparation and Characterization of Silica-coated Gold Nanoflowers (AuNFs) with Raman Dye Encoding
- Authors
- Yoo, Jihye; Lee, Sang-Wha
- Issue Date
- 20-Sep-2014
- Publisher
- KOREAN CHEMICAL SOC
- Keywords
- Gold nanoflowers; Chitosan; SERS; Silica layer
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.35, no.9, pp.2765 - 2768
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 35
- Number
- 9
- Start Page
- 2765
- End Page
- 2768
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12288
- DOI
- 10.5012/bkcs.2014.35.9.2765
- ISSN
- 0253-2964
- 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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Collections - 공과대학 > 화공생명공학과 > 1. Journal Articles
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