Central to the success of AuNP-based catalytic systems is the effective modification to enhance their catalytically active sites, long-term stability, and applicability in green reaction environments. We report an <i>in situ</i> method to effectively encapsulate multiple gold nanoparticles (AuNPs) within functional-group-free poly(N-isopropylacrylamide) particles, which are developed as reactive quasi-homogeneous catalysts for carbon-carbon bond-forming reactions under base-free aerobic conditions<b>.</b> Unlike supported and embedded metal nanoparticles, the surfaces of the encapsulated AuNPs are nearly free from the reducing/stabilizing agents that can often serve as a physical barrier in catalytic reactions (e.g., minimizing the role of the adsorbed reducing/stabilizing agents and maximizing the active sites of the loaded AuNPs as a catalyst). Given these features, employing these composite particles in the homocoupling of arylboronic acid derivatives results in an unexpectedly high catalytic activity and selectivity in EtOH. Investigating these types of materials and reaction conditions can lead to the development of robust, versatile, and environmentally-friendly catalytic systems.

Encapsulation of gold nanoparticles into controlled homopolymer particles for catalytic applications

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.