Journal
ANALYTICAL CHEMISTRY
Volume 87, Issue 18, Pages 9308-9314Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.5b01982
Keywords
-
Categories
Funding
- National Research Foundation [2014R1A2A1A11051727]
- Korea Environmental Industry and Technology Institute [2015000540007]
- National Research Foundation of Korea [2014R1A2A1A11051727] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
A peptide-based ensemble for the detection of cyanide ions in 100% aqueous solutions was designed on the basis of the copper binding motif. 7-Nitro-2,1,3-benzoxadiazole-labeled tripeptide (NBD-SSH, NBD-SerSerHis) formed the ensemble with Cu2+, leading to a change in the color of the solution from yellow to orange and a complete decrease of fluorescence emission. The ensemble (NBD-SSH-Cu2+) sensitively and selectively detected a low concentration of cyanide ions in 100% aqueous solutions by a colorimetric change as well as a fluorescent change. The addition of cyanide ions instantly removed Cu2+ from the ensemble (NBD-SSH-Cu2+) in 100% aqueous solutions, resulting in a color change of the solution from orange to yellow and a turn-on fluorescent response. The detection limits for cyanide ions were lower than the maximum allowable level of cyanide ions in drinking water set by the World Health Organization. The peptide-based ensemble system is expected to be a potential and practical way for the detection of submicromolar concentrations of cyanide ions in 100% aqueous solutions.
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