期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 13, 期 13, 页码 5824-5830出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cp02658a
关键词
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资金
- National Science Foundation [CHE 0848701]
- National Natural Science Foundation of China [21072052, J0830415]
- National Basic Research Program of China [2009CB421601]
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.
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