Enzyme Mediated Encapsulation of Gold Nanoparticles by Polyaniline Nanoshell

Autor:	Inna Popov, E. Arbeli, S. Arkin, E. Natan, Muhamad Ikbal, Ruthy Sfez, Shlomo Yitzchaik, Yosef Bardavid
Rok vydání:	2023
Předmět:	chemistry.chemical_compound Materials science chemistry Colloidal gold Polyaniline Nanotechnology Nanoshell Encapsulation (networking)
Zdroj:	Journal of Self Assembly and Molecular Electronics. :1-16
ISSN:	2245-8824 2245-4551
Popis:	In this contribution we describe the formation of gold nanoparticles (AuNP)and polyaniline (PANI) AuNP-PANI nanocomposite via in situ enzymaticpolymerization. The method consists of electrostatic adsorption of aniliniummonomers on AuNPs citrate stabilized surface of 50 nm diameters, followedby oxidation with horseradish peroxidase (HRP) enzyme and its cofactorH2O2. All reaction steps were monitored by UV-Vis-NIR spectroscopy includ-ing in situ detection of the polymerization process. UV-Vis-NIR, Cyclicvoltammetry (CV) and surface enhanced Raman scattering (SERS) measure-ments supported the formation of a nanoshell of PANI on the AuNP core. Two templates for anilinium assembly were compared revealing a strongdependence of the enzymatic kinetics on the template. The kinetic study hadshown that the rigid template of the AuNP contributes to higher reaction rateon the AuNP compared with the more flexible polyanion template. The mildreaction condition enables an easy and precise method for obtaining PANInano-shell on anionic templates for advanced bioelectronic applications
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a13df104251dc917c7ae7e7df71641a6 https://doi.org/10.13052/jsame2245-4551.311 Zobrazit plný text záznamu