Optical chemical sensors possess many features that make them suitable for
various environments. In order to construct this kind of sensors, the key t
echnology is to develop new types of recognition chemistry with optical pro
perty changes. The development of supramolecular chemistry has provided suc
h a technology. In this paper, three kinds of supramolecular recognition sy
stems have been discussed according to the relationship between receptor an
d chromophore and used to construct some new optical chemical sensors; (C)
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