Rhodamine – Cyclohexane diamine based 'turn-on' fluorescence chemosensor for Cr3+: Photophysical & confocal cell imaging studies
| Autor: | Gargi Mishra, Sri Sivakumar, Sunanda Sahana, Parimal K. Bharadwaj |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Cyclohexane 010405 organic chemistry General Chemical Engineering Metal ions in aqueous solution General Physics and Astronomy General Chemistry 010402 general chemistry Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences Rhodamine chemistry.chemical_compound chemistry Diamine Rhodamine B Titration |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 351:42-49 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2017.10.004 |
| Popis: | A new rhodamine based fluorescent turn on sensor L has been reported as a highly selective and sensitive chemosensor for the Cr3+ ion in a CH3CN-H2O solution. In presence of Cr3+ ion, the strong fluorescence enhancement is attributed due to the interaction of Cr3+ with L, leading to opening of the spirolactam ring of rhodamine B to the amide form. The Cr3+ sensing mechanism is also supported by the Job’s plot, ESI-MS, 1H NMR titration experiments. Importantly, this probe shows high selectivity over other biologically relevant metal ions. Also, anions do not show any effect. In addition, the detection limit is found to be up to 7.5 nM which is acceptable within the EPA (US) limit. The probe is also able to function within a broad biological pH range of 4–8. Furthermore, the probe L shows cellular penetrability for its potential use in confocal cell imaging studies. |
| Databáze: | OpenAIRE |
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