Molecular Recognition by Calix[4]arene-Modified Gold Nanoparticles in Aqueous Solution

Extremely stable, water‐soluble gold nanoparticles 3 capable of specific molecular recognition of pyridinium ions in aqueous systems are prepared. The particles are stabilized and solubilized by thioalkylated oligoethylene glycol ligands 1. Specific recognition was achieved by thiol‐modified calixar...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2005-05, Vol.44 (19), p.2913-2916
Main Authors: Tshikhudo, T. Robert, Demuru, Domenico, Wang, Zhenxin, Brust, Mathias, Secchi, Andrea, Arduini, Arturo, Pochini, Andrea
Format: Article
Language:English
Subjects:
calixarenes
Calixarenes - chemistry
gold
Gold - chemistry
Magnetic Resonance Spectroscopy
Metal Nanoparticles - chemistry
Microscopy, Electron, Transmission
Models, Molecular
molecular recognition
Molecular Structure
nanoparticles
Solutions
Water - chemistry
water solubility
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Summary:Extremely stable, water‐soluble gold nanoparticles 3 capable of specific molecular recognition of pyridinium ions in aqueous systems are prepared. The particles are stabilized and solubilized by thioalkylated oligoethylene glycol ligands 1. Specific recognition was achieved by thiol‐modified calixarene ligands 2. The strongly colored gold particles also served as readily detectable optical markers for the specific binding events.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200462909