Pal, Srimanta ; Paul, Sujay ; Chattopadhyay, Arun (2021) Enhanced solid-state plasmon catalyzed oxidation and SERS signal in the presence of transition metal cations at the surface of gold nanostructures Physical Chemistry Chemical Physics, 23 (38). pp. 21808-21816. ISSN 1463-9076
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Official URL: http://doi.org/10.1039/D1CP02931B
Related URL: http://dx.doi.org/10.1039/D1CP02931B
Abstract
The effect of several metal cations (Mn2+, Co2+, Ni2+, Cu2+ and Zn2+) on the photochemical conversion of 4-aminothiophenol (4-ATP) into 4,4′-dimercaptoazobenzene (DMAB) is probed using surface enhanced Raman scattering (SERS). The coupling reaction is carried out on the surface of Au nanoparticles and Au nanorods using 532 nm and 632.8 nm laser excitations, respectively, in the absence and presence of metal cations. Here, we report that DMAB formation on the surface of Au nanostructures – when carried out in the solid state – is augmented significantly (by a factor of 1.98 to 4.07 and 3.34 to 5.74 for Au nanoparticle and Au nanorod substrates, respectively, and depending on the metal). Furthermore, the SERS signal is also markedly enhanced. Thus, the results underpin a new way of carrying out a photochemical reaction with a higher yield along with a higher SERS signal.
Item Type: | Article |
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Source: | Copyright of this article belongs to Royal Society of Chemistry |
ID Code: | 135499 |
Deposited On: | 24 Jan 2023 09:05 |
Last Modified: | 24 Jan 2023 09:05 |
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