Metal-polymer heterojunction in colloidal-phase plasmonic catalysis

Autor: Andrea Rogolino, Nathalie Claes, Judit Cizaurre, Aimar Marauri, Alba Jumbo-Nogales, Zuzanna Lawera, Joscha Kruse, María Sanromán-Iglesias, Ibai Zarketa, Unai Calvo, Elisa Jimenez-Izal, Yury P. Rakovich, Sara Bals, Jon M. Matxain, Marek Grzelczak
Přispěvatelé: European Commission, Ministerio de Ciencia, Innovación y Universidades (España), European Research Council, Agencia Estatal de Investigación (España), Eusko Jaurlaritza
Rok vydání: 2022
Předmět:
Zdroj: The journal of physical chemistry letters
Addi. Archivo Digital para la Docencia y la Investigación
instname
ISSN: 1948-7185
DOI: 10.1021/acs.jpclett.1c04242
Popis: Plasmonic catalysis in the colloidal phase requires robust surface ligands that prevent particles from aggregation in adverse chemical environments and allow carrier flow from reagents to nanoparticles. This work describes the use of a water-soluble conjugated polymer comprising a thiophene moiety as a surface ligand for gold nanoparticles to create a hybrid system that, under the action of visible light, drives the conversion of the biorelevant NAD+ to its highly energetic reduced form NADH. A combination of advanced microscopy techniques and numerical simulations revealed that the robust metal–polymer heterojunction, rich in sulfonate functional groups, directs the interaction of electron-donor molecules with the plasmonic photocatalyst. The tight binding of polymer to the gold surface precludes the need for conventional transition-metal surface cocatalysts, which were previously shown to be essential for photocatalytic NAD+ reduction but are known to hinder the optical properties of plasmonic nanocrystals. Moreover, computational studies indicated that the coating polymer fosters a closer interaction between the sacrificial electron-donor triethanolamine and the nanoparticles, thus enhancing the reactivity.
This work was supported by grant PID2019-111772RB-I00 funded by MCIN/AEI/10.13039/501100011033 and grant IT 1254-19 funded by Basque Government. The authors acknowledge the financial support of the European Commission (EUSMI, Grant 731019). S.B. is grateful to the European Research Council (ERC-CoG-2019 815128).
Databáze: OpenAIRE
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