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

Hyojung Lim; Youngwon Ju; Joohoon Kim

doi:10.1021/acs.analchem.6b00073

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

Anal Chem. 2016 May 3;88(9):4751-8. doi: 10.1021/acs.analchem.6b00073. Epub 2016 Apr 13.

Authors

Hyojung Lim¹, Youngwon Ju¹, Joohoon Kim¹

Affiliation

¹ Department of Chemistry, ‡KHU-KIST Department of Converging Science and Technology, Kyung Hee University , Seoul 130-701, Republic of Korea.

PMID: 27032992
DOI: 10.1021/acs.analchem.6b00073

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't