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Appl. Sci. 2017, 7(9), 953; doi:10.3390/app7090953

Pt-Based Nanostructures for Observing Genuine SERS Spectra of p-Aminothiophenol (PATP) Molecules

1
Department of Physics, Beihang University, Beijing 100191, China
2
Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 15 August 2017 / Revised: 9 September 2017 / Accepted: 9 September 2017 / Published: 15 September 2017
(This article belongs to the Special Issue Laser Interaction with Plasmonic Nanostructures)
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Abstract

By one-pot wet chemical method, Pt-based hollow nanostructures were synthesized at room temperature. Because of the highly damping optical response of the metal, these Pt-based hollow nanostructures exhibited weak thermal effects with a laser focal spot on 4-aminothiophenol (PATP) molecules limiting dimerisation. The isolated surface enhanced Raman scattering (SERS) spectra of PATP, in which the vibrational bands from 4,4′-dimercaptoazobenzene (DMAB) molecules are not observed, were able to be seen, and this was in good agreement with the Raman spectra of PATP powder. In addition, the concentration of PATP molecules was varied, and the illumination time was increased to 2000 s, respectively. It was found that spectra were stable with varied PATP concentrations, and the plasmon-driven chemical conversion of PATP to DMAB was still suppressed, even when the laser illumination time was increased to 2000 s. View Full-Text
Keywords: SERS; Pt; hollow structure; PATP SERS; Pt; hollow structure; PATP
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Wang, Y.; Zhao, H.; Cao, E.; Sun, Y.; Ye, H.; Lin, W.; Wang, R. Pt-Based Nanostructures for Observing Genuine SERS Spectra of p-Aminothiophenol (PATP) Molecules. Appl. Sci. 2017, 7, 953.

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