Functionalization with polymer ligands enhances the catalytic activity of surfactant-stabilized gold nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932229" target="_blank" >RIV/60461373:22310/25:43932229 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr00910c" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr00910c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5nr00910c" target="_blank" >10.1039/d5nr00910c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Functionalization with polymer ligands enhances the catalytic activity of surfactant-stabilized gold nanoparticles

Popis výsledku v původním jazyce

Plasmonic nanoparticles are increasingly explored as catalytically active entities to affect (photo-)catalytic transformations. Synthesis methods are established for accessing such nanoparticles with defined dimension and shape, thereby controlling their plasmonic behavior, including the possibility of resonance engineering and the control of chiral plasmonic properties of single plasmonic nanoparticles that can be used to drive asymmetric photocatalytic transformations. However, the most productive nanoparticle synthesis procedures employ surfactants that lead to comparably dense surface layers and may limit surface accessibility. In this work, we demonstrate that functionalization of such surfactant-stabilized plasmonic gold nanoparticles with a brush-type polymer-ligand layer results in both significantly increased catalytic activity in the colloidal solution state (by a factor of similar to 4) and excellent colloidal stability, enabling several catalytic cycles. Heterogeneous catalysis experiments performed after surface deposition allowed the comparison between polymer ligand-grafted and ligand-free gold nanoparticles, which show comparably weak differences in catalytic rate (a factor of similar to 1.8). These results pave the way for efficient (photo-)catalysis driven by well-defined plasmonic nanoparticles in colloidal solution.

Název v anglickém jazyce

Functionalization with polymer ligands enhances the catalytic activity of surfactant-stabilized gold nanoparticles

Popis výsledku anglicky

Plasmonic nanoparticles are increasingly explored as catalytically active entities to affect (photo-)catalytic transformations. Synthesis methods are established for accessing such nanoparticles with defined dimension and shape, thereby controlling their plasmonic behavior, including the possibility of resonance engineering and the control of chiral plasmonic properties of single plasmonic nanoparticles that can be used to drive asymmetric photocatalytic transformations. However, the most productive nanoparticle synthesis procedures employ surfactants that lead to comparably dense surface layers and may limit surface accessibility. In this work, we demonstrate that functionalization of such surfactant-stabilized plasmonic gold nanoparticles with a brush-type polymer-ligand layer results in both significantly increased catalytic activity in the colloidal solution state (by a factor of similar to 4) and excellent colloidal stability, enabling several catalytic cycles. Heterogeneous catalysis experiments performed after surface deposition allowed the comparison between polymer ligand-grafted and ligand-free gold nanoparticles, which show comparably weak differences in catalytic rate (a factor of similar to 1.8). These results pave the way for efficient (photo-)catalysis driven by well-defined plasmonic nanoparticles in colloidal solution.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

17

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

14271-14277

Kód UT WoS článku

001493250700001

EID výsledku v databázi Scopus

2-s2.0-105006670598