Laser Power Dependent Surface-Enhanced Raman Spectroscopic Study of 4-Mercaptopyridine on Uniform Gold Nanoparticle-Assembled Substrates
Source abstract
Abstract
A facile procedure was introduced to prepare uniform and highly active substrates assembled with gold nanoparticles for surface-enhanced Raman spectroscopy (SERS). The laser power and time dependent SERS study of 4-mercaptopyridine (4-MPy) adsorbed on this substrate was investigated. The relative intensity of the characteristic Raman peak pair (1575 and 1610 cm –1 ) was found to change with the laser power and the exposure time. The spectral changes may originate from change in the fraction of the double-end-bonded and the single-end-bonded states of 4-Mpy adsorbed on the gold nanoparticle-assembled substrate. In addition, this study offers a way to avoid the effect of laser power to achieve reliable spectral response to other factors.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Electrochemical Analysis and Applications · Nanocluster Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Physical Chemistry of Solid Surfaces, the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Department of Chemistry, College of Chemistry and Chemical Engineering and Collaborative Innovation Center of Chemistry of Energy Materials, Xiamen University, Xiamen 361005, China
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