Mingling Electronic Chemical Sensors with Supramolecular Host-Guest Chemistry
Supramolecular host-guest chemistry allows sensitive and selective recognition of a certain substrate by using a rationally designed
receptor. Such a molecular receptor can be incorporated into an electronic chemical sensor so that the anticipated host-guest binding
event can be transduced directly into electric signals. In particular, chemiresistors and chemically sensitive field-effect transistors report
the change of conductance/resistance of the active conducting materials upon the desired supramolecular binding event via varied
mechanisms. This mini-review highlights the recent advances in the development of electronic sensors, in which the active conducting/
semiconducting materials are incorporated with specific supramolecular receptors. Depending on the nature of the active conducting
layer, these devices can be categorized into carbon materials-based sensors and organic semiconductor-based sensors. At the end of this
review, an outlook of the related field is provided and discussed.
Keywords: Carbon nanotubes, chemiresistor, electronic sensor, field-effect transistor, host-guest interaction, molecular recognition, organic
semiconductor, supramolecular chemistry.
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