Krishnan, Jegatha Nambi Kim, In Tae Ahn, Sung-Hyun Kim, Zee Hwan Cho, So-Hye Kim, Sang Kyung 2024-01-20T11:00:53Z 2024-01-20T11:00:53Z 2021-09-05 2013-12-20 1976-0280 https://pubs.kist.re.kr/handle/201004/127322 In this study, flower-like Au structures (three dimensional branched nanoparticles) were constructed by using a simple, template-free and cost effective electroless plating method. The key synthesis strategy was to perform controlled plating of Au on a variety of metals (Ag, Cu and Pt) deposited on the Si substrate. Herein, gold is deposited purely as a result of reaction of chemicals in bath to form Au nanoflowers/lawns. The size and shape of the Au nanoflowers could be tailored by controlling the immersion Au plating time on multitude of metallic substrates. Time course measurements by SEM and HR-TEM were used to follow reaction progress and evolution of flower-like shape. The generation of unique and reproducible morphological Au nanostructures onto each substrate implies that the Au nanostructures are substrate dependent. Fast Fourier Transform measurements were conducted using HR-TEM on isolated samples that proved the presence of anisotropic growth of Au polycrystalline structures. The gold nanostructures have shown the surface-enhanced Raman scattering (SERS) by detecting the enhanced Raman spectra of 4-Aminobenzenethiol (4-ABT) molecules. The enhancement of Raman signal was stronger for Au structures built on Pt or Ag thin films. The Au nanoflowers produced by this simple method exhibited effective surface-enhancement for biosensing applications. English KOREAN BIOCHIP SOCIETY-KBCS ENHANCED RAMAN-SCATTERING HIGH-YIELD SYNTHESIS GOLD NANOPARTICLES OPTICAL-PROPERTIES MULTIPLE SHAPES REDUCTION SILVER NANOFLOWERS SURFACES Electroless deposition of SERS active Au-nanostructures on variety of metallic substrates Article 10.1007/s13206-013-7409-z 1 BIOCHIP JOURNAL, v.7, no.4, pp.375 - 385 BIOCHIP JOURNAL 7 4 375 385 scie scopus kci other ART001827291 000328810100009 2-s2.0-84891840435 Biochemical Research Methods Chemistry, Analytical Nanoscience & Nanotechnology Biochemistry & Molecular Biology Chemistry Science & Technology - Other Topics Article ENHANCED RAMAN-SCATTERING HIGH-YIELD SYNTHESIS GOLD NANOPARTICLES OPTICAL-PROPERTIES MULTIPLE SHAPES REDUCTION SILVER NANOFLOWERS SURFACES Electroless deposition Gold Nanoflower Surface-enhanced Raman scattering (SERS)