In Situ Depletion-Guided Engineering of Nanoshell-like Gold Nanocluster Assemblies with Enhanced Peroxidase-like Nanozyme Activity

Debkumar Bera, Arun Mukhopadhyay, Nonappa, Nirmal Goswami

Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

Abstrakti

Functional superstructures constructed from metal nanoclusters (MNCs) hold great promise in providing highly tunable photoluminescence (PL), catalytic activity, photothermal stability, and biological functionality. However, their controlled synthesis with well-defined size, structure, and properties remains a significant challenge. Herein, we introduce a novel approach that combines depletion attraction and thermal activation to induce the in situ formation of spherical superclusters (AuSCs) from Au(I)-thiolate complexes within the assembly. Extensive characterization and electron tomographic reconstruction reveal that Au(I)-thiolate complexes can be sequentially transitioned into metallic Au0, resulting in hollow nanoshell-like structures with consistent size (∼110 nm) and diverse shell configurations. Our results demonstrate that AuSCs with thinner shells, containing a high concentration of Au(I)-thiolate complexes, exhibit the highest PL, while AuSCs with thicker shells, containing high concentrations of metallic gold atoms and low ligand density, show remarkable peroxidase-like nanozyme activity in the 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation reaction.

AlkuperäiskieliEnglanti
Sivut7299-7305
Sivumäärä7
JulkaisuJournal of Physical Chemistry Letters
Vuosikerta14
Numero32
DOI - pysyväislinkit
TilaJulkaistu - 2023
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Julkaisufoorumi-taso

  • Jufo-taso 3

!!ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Sormenjälki

Sukella tutkimusaiheisiin 'In Situ Depletion-Guided Engineering of Nanoshell-like Gold Nanocluster Assemblies with Enhanced Peroxidase-like Nanozyme Activity'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä