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Carboxylated Pillar[5]arene‐Coated Gold Nanoparticles with Chemical Stability and Enzyme‐like Activity
Author(s) -
Park Chiyoung,
Jeong Eun Sun,
Lee Kyung Joo,
Moon Hoi Ri,
Kim Kyoung Taek
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201402574
Subject(s) - carboxylate , chemistry , steric effects , denticity , colloidal gold , pillar , nanoparticle , hydrothermal circulation , combinatorial chemistry , nanostructure , peroxidase , enzyme , nanotechnology , chemical engineering , stereochemistry , organic chemistry , materials science , metal , structural engineering , engineering
A facile synthesis of gold nanoparticles (AuNPs) covered with a multidentate macrocycle, carboxylated pillar[5]arene ( CP ), via a one‐pot hydrothermal process is reported. The resulting AuNPs are highly stable against salts and pH variations, while their traditional counterparts are not stable at the same conditions. For the stabilization, multiple carboxylate groups of CP might contribute to electrostatic or steric stabilization. In addition, we found that CP ‐coated AuNPs exhibit greater peroxidase‐like activity than citrate‐stabilized AuNPs in the presence of silver cations. The system presented herein would provide a new scheme to fabricate unique sensory systems in combination with enzymes, which can bind to the pocket of CP .