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A benzimidazole-based receptor that selectively recognized Cr 3+ without interference from other metal ions was synthesized in this study. The resultant Cr-complex recognized HSO4− and F − via two approaches. HSO4− ions bound to the metal center, causing changes in the fluorescent spectra at different wavelengths, whereas F − ions displaced Cr 3+ , thereby switching...
We synthesized an imine-linked, benzimidazole-based chemosensor that can be used for chromogenic recognition of Mg 2+ and fluorescent recognition of Cr 3+ . The chemosensor shows sensitive, selective, and ratiometric recognition of Cr 3+ through concurrent quenching at one wavelength and enhancement of fluorescence intensity at another wavelength. It can also be used to detect...
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