Triazole-ester modified silver nanoparticles were designed and synthesized through click chemistry, which provided a highly selective colorimetric sensor for Cd2+.

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A new calix[4]azacrown is synthesized from 1,3-dipropynyloxycalix[4]arene in a good yield of 85% and was modified on a silicon surface via click chemistry to be a switchable wettability sensor for ion pairs ([C(4)mim]Cl). A cooperative mechanism involving supramolecular interactions is proposed.

A calix[4]arene lipoic acid (C4LA) was synthesized by click chemistry in 62% yield. It was immobilized on Au surfaces via self-assembly to offer C4LA Self-Assembled Monolayers (SAMs). The SAMs show wettability and electrochemical impedance dual-signal response for methomyl with highly sensitivity and selectivity.

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