Abstract
| - By linking the urea moiety at the 1,8 positions of thecarbazole fragment, we synthesized host systems 1, 2, and3 having both chromogenic and fluorogenic signalingsubunits. The spectral changes in both the signaling subunitscould be easily analyzed via a simple 2-dimensional (2D)analytic approach described here, which enables us todifferentiate the given set of anions. Structural studies arealso reported.
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