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Issue 13, 2011
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Cationic recognition by tert-butylcalix[4]arene-functionalized nanoprobes

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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 Mn+ 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 hostguest probes using a variety of calixarene ligands for ionic recognition in a simplistic detection format.

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

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The article was received on 24 Nov 2010, accepted on 14 Jan 2011 and first published on 15 Feb 2011

Article type: Paper
DOI: 10.1039/C0CP02658A
Citation: Phys. Chem. Chem. Phys., 2011,13, 5824-5830
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    Cationic recognition by tert-butylcalix[4]arene-functionalized nanoprobes

    H. Yan, J. Luo, H. Xie, D. Xie, Q. Su, J. Yin, B. N. Wanjala, H. Diao, D. An and C. Zhong, Phys. Chem. Chem. Phys., 2011, 13, 5824
    DOI: 10.1039/C0CP02658A

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