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Solvent-assisted selective detection of sub-micromolar levels of Cu2+ ions in aqueous samples and live-cells.
- Source :
-
Analyst . 2013, Vol. 138 Issue 4, p1130-1136. 7p. - Publication Year :
- 2013
-
Abstract
- Two new rhodamine–indole conjugates 1 and 2 were synthesized for studying their ability to probe specific metal ions at physiological pH in the presence of other competing metal ions. In non-aqueous medium, probe 1 predominantly binds Cu2+ ions with considerable interference from Fe3+ and Ni2+ ions. However, in aqueous medium, 1 exhibits a higher degree of selectivity for Cu2+ ions with little interference from Fe3+ ions, and no interference from Ni2+ ions. The probe 2, obtained by tethering a triazole moiety with probe 1, selectively binds Cu2+ ions in aqueous medium even in the presence of other metal ions including Fe3+ ions. The sensitivity of probe 2 to pH variation and interaction with various amino acids were also investigated. The excellent stability of 2 in physiological pH conditions, non-toxicity, non-interference of amino acids in the detection process, and the remarkable selectivity for Cu2+ ions in aqueous medium allowed the use of 2 in the imaging of live fibroblast cells treated with Cu2+. [ABSTRACT FROM AUTHOR]
- Subjects :
- *AQUEOUS solutions
*RHODAMINES
*METAL ions
*TRIAZOLES
*FUNCTIONAL groups
*AMINO acids
Subjects
Details
- Language :
- English
- ISSN :
- 00032654
- Volume :
- 138
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Analyst
- Publication Type :
- Academic Journal
- Accession number :
- 100865931
- Full Text :
- https://doi.org/10.1039/c2an36339a