Simple fabrication of a carbaldehyde based fluorescent 'turn-on' probe for the selective and sole detection of Pd2+: application as test strips
| Autor: | Saswati Gharami, Tapan Kumar Mondal, Krishnendu Aich, Chandan Kumar Manna, Lakshman Patra |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Fabrication Chemistry Analytical chemistry 02 engineering and technology General Chemistry Time-dependent density functional theory Electronic structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Binding constant Fluorescence Catalysis 0104 chemical sciences Test strips Turn (geometry) Materials Chemistry 0210 nano-technology |
| Zdroj: | New Journal of Chemistry. 43:16915-16920 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/c9nj04313f |
| Popis: | A new fluorescent “turn-on” probe (DHMC) has been designed and synthesized to selectively detect Pd2+ among other cations at physiological pH. Upon incremental addition of Pd2+ into the probe solution, a “turn-on” emission enhancement was noticed with a ∼69 nm red shift at 562 nm in CH3CN/H2O (4/1, v/v) solution. The limit of detection and binding constant values have been determined and found to be on the order of 7.4 × 10−8 M and 1.7 × 105 M−1 respectively, which clearly suggests that the probe is very efficient in detecting Pd2+ at very minute levels and also the DHMC–Pd2+ complexation is stable enough too. A brilliant application of the probe has been explored which indicates that DHMC can detect Pd2+ in the solid state too. DFT and TDDFT calculations are carried out to interpret the electronic structure and sensing mechanism. |
| Databáze: | OpenAIRE |
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