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 ON the fluorescent spectra at the same wavelength.
Bibliographical noteFunding Information:
This work was supported by the India-Korea Joint Program of Cooperation in Science & Technology (2011-0027710) and by an CSIR project grant (01(2417)/10 EMR-II). P.S. is thankful to UGC India for a research fellowship.
All Science Journal Classification (ASJC) codes
- Drug Discovery
- Organic Chemistry