A Schiff-base receptor based on phenolphthalein derivate appended 2-furoic hydrazide: Highly sensitive fluorogenic 'turn on' chemosensor for Al3+
| Autor: | Duygu Aydin, Onder Alici |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Detection limit
HEPES Schiff base General Chemical Engineering General Physics and Astronomy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Hydrazide 01 natural sciences Fluorescence Combinatorial chemistry 0104 chemical sciences Phenolphthalein Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Titration 0210 nano-technology |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 404:112876 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2020.112876 |
| Popis: | Herein, a novel phenolphthalein-derived Schiff base fluorescence probe FF2H has readily been synthesized and applied to be fluorescence ″turn-on‶ probe for Al3+ sensing in aceto-nitrile (ACN) : HEPES (5.0 μM, 50/50, v/v, pH = 7). The emission response of the chemo-sensor FF2H toward Al3+ depends on the metal chelation-enhanced fluorescence (CHEF) effect and CHEF prevents C = N isomerisation, the excited state intra-molecular (ESIPT), and PET process of the chemosensor FF2H. FF2H–Al3+ complexation (1:2 stoichiometry) was revealed by Job's method and 1H–NMR titration. The detection limit (LOD) (3σ/K) value of FF2H for Al3+ was estimated to be 7.0 nM, demonstrating that the chemosensor FF2H could be employed as a fluorogenic ″turn-on‶ chemosensor to effectively and selectively to recognize Al3+. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect