Cationic recognition by tert-butylcalix[4]arene-functionalized nanoprobes

A nanoparticle-based strategy has been demonstrated using structurally-tailored tert-butylcalixarenes immobilized on gold nanoparticles to tune the guest access to the calixarene cone cavity for cationic recognition. This strategy exploits the interparticle charge-induced aggregation upon selective...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2011-04, Vol.13 (13), p.5824-5830
Main Authors: HONG YAN, JIN LUO, XIE, Hong-Ming, XIE, De-Xun, QIONG SU, JUN YIN, WANJALA, Bridgid N, HAN DIAO, AN, De-Lie, ZHONG, Chuan-Jian
Format: Article
Language:English
Subjects:
Calixarenes
Calorimetry
Cationic
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Nanocomposites
Nanomaterials
Nanostructure
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Recognition
Strategy
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Summary:A nanoparticle-based strategy has been demonstrated using structurally-tailored tert-butylcalixarenes immobilized on gold nanoparticles to tune the guest access to the calixarene cone cavity for cationic recognition. This strategy exploits the interparticle charge-induced aggregation upon selective capture of metal cations into the nanoparticle-immobilized tert-butylcalixarenes, which produces calorimetric changes for the detection. A possible pathway for the binding of M(n+) into the t-BCA structure and the interparticle interaction is proposed for the formation of an electric double layer inducing the interparticle association responsible for the red-shifted surface plasmon resonance band of the nanoparticles. The value of this class of calorimetric nanoprobes will be in the area of designing advanced host-guest probes using a variety of calixarene ligands for ionic recognition in a simplistic detection format.
ISSN:1463-9076
1463-9084
DOI:10.1039/c0cp02658a