Benzimidazole-based imine-linked chemosensor: Chromogenic sensor for Mg2+ and fluorescent sensor for Cr3+

Preeti Saluja, Hemant Sharma, Navneet Kaur, Narinder Singh, Doo Ok Jang

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2289-2293
Number of pages5
Issue number10
Publication statusPublished - 2012 Mar 11

Bibliographical note

Funding 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

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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