Surface Property Modification of Silver Nanoparticles with Dopamine-Functionalized Poly(pentafluorostyrene) via RAFT Polymerization

Abstract

This research aims to synthesize a dopamine-functionalized macromolecular anchor to perform surface modification on the target nanostructures. A molecular anchor, 3,4-dichloro-1-[2-(3,4-dihydroxyphenyl)ethyl]-1H-pyrrole-2,5-dione, was successfully synthesized from dopamine and 2,3-dichloromaleic anhydride. The anchor acted as a linkage to couple the chains of poly(pentafluorostyrene) (PPFS) which were synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization. Modification was successfully performed to silver nanoparticles (AgNPs) by deposition of the dopamine-functionalized coupled PPFS onto the surface of the particles. The modified AgNPs had demonstrated improved dispersibility in organic solvent due to the hydrophobic nature of PPFS. To modify the surface chemistry of the nanoparticles further, thioglucose was grafted onto the structure of the coupled PPFS via thiol-fluoro nucleophilic substitution at the para-position of the pentafluorophenyl groups on the monomer units. The presence of sugar moieties on the coupled PPFS increased its hydrophilicity, which allowed the modified AgNPs to be readily dispersed in aqueous solvent.

One-Step Synthesis of Silver Nanoparticles on Polydopamine-Coated Sericin/Polyvinyl Alcohol Composite Films for Potential Antimicrobial Applications

“…Based on the self-polymerization of dopamine under weak alkaline conditions, PDA can adhere to almost all material surfaces [ 41 , 42 ]. Since dopamine has metal ion chelating ability and redox activity [ 43 , 44 ], it could directly reduce the adsorbed Ag + on the dopamine-coated material surface to form AgNPs via a one-step reaction [ 45 , 46 ]. These properties may facilitate the use of PDA as a 3D matrix to enhance the adsorption of Ag + and promote the high-density growth of AgNPs.…”

Tailor-made glycopolymersviareversible deactivation radical polymerization: design, properties and applications

“…164–167 Despite the myriad of applications of AgNPs, only a few recent literature reports are available on glycopolymer–AgNP conjugates. 146,168,169 Similar to the surface modification of AuNPs, polymer chains can be immobilized on the AgNP surface through Ag–S bond formation and catechol chemistry. 146,168…”

“…146,168,169 Similar to the surface modification of AuNPs, polymer chains can be immobilized on the AgNP surface through Ag–S bond formation and catechol chemistry. 146,168…”

Novel and Sustainable Colorants Developed via Incorporating Azo Chromophores into Dopamine Molecules

“…With the benefits of having catechol and amine groups, dopamine could be used as the starting points for covalent modification with molecules, and therefore it is often used to conjugate with other molecules or material surfaces to achieve functional applications, such as bioadhesives or magnetic nanoparticles. ,− However, few studies have been focused on its application on coloration. Furthermore, dopamine has an obvious absorption peak at ca.…”