Journal
JOURNAL OF LUMINESCENCE
Volume 145, Issue -, Pages 480-485Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2013.08.018
Keywords
Rhodamine; Turn-on; Fluorescence; Iron; Sensors; Fluorescence imaging
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Funding
- UGC
- DST-IRHPA
- FIST
- PURSE
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Two rhodamine-based sensors RDI-1, RDI-2 was designed and synthesized by incorporation of the rhodamine 6G fluorophore and 2-formyl imidazole as the recognizing unit via the imine linkages. RDI-1, RDI-2 exhibits very high selectivity and an excellent sensitivity towards Fe(III) ions in aqueous buffer solution on compared with other probes. The color change from colorless to pink and turn-on fluorescence after binding with iron (III) was observed. Based on jobs plot and ESI-MS studies, the 1:1 binding mode was proposed. Live cell imaging experiments with each probe showed that these probes widely applicable to detect Fe3+ in living cells. (C) 2013 Elsevier B.V. All rights reserved.
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