This part of the description indicates that the probe's design is rooted in a new compound or molecule, which is described as a "diaryloxadiazole chelate." In chemistry, a chelate is a complex formed by a central atom or ion bonded to multiple other atoms or groups, known as ligands. In this case, the diaryloxadiazole compound likely acts as a ligand that binds to Zn^2+ ions, resulting in the fluorescence response.
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