Au-Au composites with inverse opal structure for surface-enhanced Raman spectroscopy

Au-Au composites with inverse opal structure for surface-enhanced Raman spectroscopy Golden inverse opals additionally decorated with 15.5 ± 1.5 nm gold nanoparticles are proposed as reusable substrates for surface-enhanced Raman spectroscopy (SERS). Gold nanoparticles are found to be uniformly distributed making an input of enhancement ability of spectral characteristics with the colloidal system by ten times. This technique is demonstrated to be efficient in spectral features tuning via a combination of different gold derivatives. Two lasers served for resonant, pre-resonance, and non-resonance signal analyses. Reusability of the Au-Au composite films is demonstrated for methylene blue as a stable dye deposited onto the SERS chips using a 632.8-nm resonant laser for exciting. The enhancement factor for methylene blue achieved 8 5 10 and for rohodamine 6G was of about 10 . It was observed that rinsing of Au-Au nanocomposite SERS films with distilled water and heating up to 100 °C followed by dropping on a new portion of Au colloids onto the platform regenerates the substrates. . . . . . Keywords Inverse opals Nanocomposite Gold electroplating Gold nanoparticles Surface-enhanced Raman spectroscopy Reusability Introduction conductive, optical, or photochemical applications. Thereby, metal photonic crystals and related substrates are an important Inverse opals are advanced materials of interest because their class of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Gold Bulletin Springer Journals

Au-Au composites with inverse opal structure for surface-enhanced Raman spectroscopy

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Publisher
Springer International Publishing
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Materials Science; Metallic Materials
ISSN
2364-821X
eISSN
2190-7579
D.O.I.
10.1007/s13404-018-0234-3
Publisher site
See Article on Publisher Site

Abstract

Golden inverse opals additionally decorated with 15.5 ± 1.5 nm gold nanoparticles are proposed as reusable substrates for surface-enhanced Raman spectroscopy (SERS). Gold nanoparticles are found to be uniformly distributed making an input of enhancement ability of spectral characteristics with the colloidal system by ten times. This technique is demonstrated to be efficient in spectral features tuning via a combination of different gold derivatives. Two lasers served for resonant, pre-resonance, and non-resonance signal analyses. Reusability of the Au-Au composite films is demonstrated for methylene blue as a stable dye deposited onto the SERS chips using a 632.8-nm resonant laser for exciting. The enhancement factor for methylene blue achieved 8 5 10 and for rohodamine 6G was of about 10 . It was observed that rinsing of Au-Au nanocomposite SERS films with distilled water and heating up to 100 °C followed by dropping on a new portion of Au colloids onto the platform regenerates the substrates. . . . . . Keywords Inverse opals Nanocomposite Gold electroplating Gold nanoparticles Surface-enhanced Raman spectroscopy Reusability Introduction conductive, optical, or photochemical applications. Thereby, metal photonic crystals and related substrates are an important Inverse opals are advanced materials of interest because their class of

Journal

Gold BulletinSpringer Journals

Published: Jun 3, 2018

References

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