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Investigation of enhanced third-order optical nonlinearity in novel coenzyme A capped silver nanoparticles

Kurdekar, AD and Chettri, P and Kurnoothala, R and Manohar, CS and Srivastava, S and Vishnubhatla, KC (2023) Investigation of enhanced third-order optical nonlinearity in novel coenzyme A capped silver nanoparticles. In: Journal of Materials Chemistry C, 11 (46). pp. 16234-16246.

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Official URL: https://doi.org/10.1039/d3tc02100a


In this paper, we report the design and synthesis of novel coenzyme A (CoA)-capped silver nanoparticles and the investigation of their third-order nonlinear optical properties. Computational studies were carried out to understand the feasibility of forming CoA-capped nanoparticles, which indicated successful stabilization of silver nanoparticles upon surface functionalization with coenzyme A. The synthesis of CoA-capped silver nanoparticles was carried out by chemical reduction of silver nitrate by sodium borohydride in the presence of heat. The appearance of the surface plasmon resonance peak at 429 nm confirmed the formation of silver nanoparticles. TEM, SEM, DLS, and Zeta potential analyses showed the formation of polydispered spherical-shaped nanoparticles with CoA capping. The third-order nonlinear susceptibilities were measured using the degenerate four-wave mixing (DFWM) technique. The CoA-capped silver nanoparticles exhibited a higher nonlinear susceptibility than the traditionally used borohydride-capped silver nanoparticles. The enhanced nonlinearity was attributed to the localised surface plasmon resonance (LSPR) of the silver nanoparticles and the electron density distribution at the interface of the nanoparticles and the capping agent. The optical properties of the CoA-capped nanoparticles can open up avenues for the use of metal nanoparticles with bulkier capping agents in optoelectronic applications. © 2023 The Royal Society of Chemistry.

Item Type: Journal Article
Publication: Journal of Materials Chemistry C
Publisher: Royal Society of Chemistry
Additional Information: The copyright for this article belongs to Royal Society of Chemistry.
Keywords: Coenzymes; Four wave mixing; Metal nanoparticles; Optical properties; Silver compounds; Sodium Borohydride; Surface plasmon resonance; Synthesis (chemical), Capping agent; Chemical reduction; Coenzyme A; Computational studies; Reduction of silver nitrates; Sodium boro hydrides; Sodium borohydrides; Surface Functionalization; Third order nonlinear optical properties; Third-order optical nonlinearities, Silver nanoparticles
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 01 Mar 2024 05:44
Last Modified: 01 Mar 2024 05:44
URI: https://eprints.iisc.ac.in/id/eprint/83827

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