A colorimetric and 'off–on' fluorescent Pd2+ chemosensor based on a rhodamine-ampyrone conjugate: synthesis, experimental and theoretical studies along with in vitro applications
| Autor: | Sanchita Mondal, Sudipta Pathak, Abdulla Al Masum, Subrata Mukhopadhyay, Saikat Kumar Manna |
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| Rok vydání: | 2019 |
| Předmět: |
02 engineering and technology
General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Mass spectrometry 01 natural sciences Fluorescence Catalysis 0104 chemical sciences Ion Rhodamine Job plot chemistry.chemical_compound chemistry Materials Chemistry Density functional theory 0210 nano-technology Stoichiometry Conjugate |
| Zdroj: | New Journal of Chemistry. 43:3513-3519 |
| ISSN: | 1369-9261 1144-0546 |
| Popis: | We successfully designed and developed a rhodamine based “turn-on” chemosensor L for the detection of Pd2+ ions down to 1.19 × 10−5 M (11.9 μM). In organo-aqueous solution, probe L displayed highly selective and sensitive colorimetric and fluorescence responses toward Pd2+ based on the ring-opening mechanism of the rhodamine spirolactam ring upon complexation with Pd2+. In the presence of Pd2+ ions, probe L formed an L–Pd2+ complex in 1 : 1 stoichiometry which was confirmed by the Job plot and mass spectroscopy. Moreover, we performed DFT (density functional theory) studies to identify the coordination characteristics and binding nature of L and the L–Pd2+ complex. In addition, cell imaging experiments revealed that probe L was able to permeate cells, and able to image Pd2+ in living cells. |
| Databáze: | OpenAIRE |
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