We synthesized an imine-linked, benzimidazole-based chemosensor that can be used for chromogenic recognition of Mg2+ and fluorescent recognition of Cr3+. The chemosensor shows sensitive, selective, and ratiometric recognition of Cr3+ through concurrent quenching at one wavelength and enhancement of fluorescence intensity at another wavelength. It can also be used to detect Mg2+ via UV-vis absorption spectroscopy. DFT calculations support these phenomena. The sensor can be used to strain microbe cells without breakage.
Bibliographical noteFunding Information:
This work was supported by the India–Korea Joint Program of Cooperation in Science & Technology ( 2011-0027710 ) and the CSIR project ( 01(2417)/10/EMR-II ). P.S. is thankful to UGC India for a research fellowship. We thank Mr. S. Soni of CSIO Chandigarh for fluorescence microscopy assistance.
All Science Journal Classification (ASJC) codes
- Drug Discovery
- Organic Chemistry