Journal
CHEMISTRYSELECT
Volume 7, Issue 45, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202203326
Keywords
Copper; Citrate; Coumarin; Fluorescence; Sensing
Categories
Funding
- University of Delhi
- CSIR (New Delhi)
- ICCR (New Delhi)
Ask authors/readers for more resources
Two novel coumarin-based Schiff-base chemosensors with extended conjugation exhibit noteworthy photo-physical properties and selective 'turn-off' detection of copper ion with significant nanomolar detection limits. The sensing event and the secondary 'turn-on' detection of the citrate ion by the [chemosensor-Cu] species were investigated through various experiments. The sequential detection of copper and citrate ions has been utilized for the construction of logic gates and low-cost detection methods.
Two novel coumarin-based Schiff-base chemosensors are presented. Courtesy to an extended conjugation between the coumarin ring and the attached pi-containing groups, both chemosensors display noteworthy photo-physical properties including emission maxima at >550 nm. Both chemosensors function as the selective sensors for the 'turn-off' detection of copper ion with the significant nanomolar detection limits. The sensing event was investigated through proton NMR and mass spectroscopy; pH studies; life-time and quantum yield measurements and DFT studies. The solution-generated [chemosensor-Cu] species illustrated remarkably selective secondary 'turn-on' detection of the citrate ion. The sequential detection of the copper and citrate ions have been utilized for the construction of logic gates as well as several low-cost detection methods.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available