Analysis reveals macrocycle encapsulation and counterion pairing influence fluorescence in thiazolothiazole derivatives, suggesting potential anion sensing applications.
The fluorescence properties of N-alkylpyridinium-conjugated thiazolothiazole (TTZ) fluorophores can be effectively modulated through counterion pairing and macrocyclic encapsulation. A distinct blue emission response to the iodide counterion offers potential applications in anion sensing. Host-guest complexation at the pyridinium site with macrocyclic receptors significantly perturbs the electronic environment of the TTZ core, enabling reversible dual-color emission.
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Kuo et al. (2025) studied this question.
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