Tailoring Catalytic Activity of Pt Nanoparticles Encapsulated Inside Dendrimers by Tuning Nanoparticle Sizes with Subnanometer Accuracy for Sensitive Chemiluminescence-Based Analyses

Here, we report the size-dependent catalysis of Pt dendrimer-encapsulated nanoparticles (DENs) having well-defined sizes over the range of 1–3 nm with subnanometer accuracy for the highly enhanced chemiluminescence of the luminol/H2O2 system. This size-dependent catalysis is ascribed to the differen...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2016-05, Vol.88 (9), p.4751-4758
Main Authors: Lim, Hyojung, Ju, Youngwon, Kim, Joohoon
Format: Article
Language:English
Subjects:
Accuracy
Catalysis
Catalytic activity
Chemiluminescence
Encapsulation
Luminescence
Nanoparticles
Platinum
Surface area
Tuning
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Summary:Here, we report the size-dependent catalysis of Pt dendrimer-encapsulated nanoparticles (DENs) having well-defined sizes over the range of 1–3 nm with subnanometer accuracy for the highly enhanced chemiluminescence of the luminol/H2O2 system. This size-dependent catalysis is ascribed to the differences in the chemical states of the Pt DENs as well as in their surface areas depending on their sizes. Facile and versatile applications of the Pt DENs in diverse oxidase-based assays are demonstrated as efficient catalysts for sensitive chemiluminescence-based analyses.
ISSN:0003-2700
1520-6882
DOI:10.1021/acs.analchem.6b00073