Fluorescence quenching study of 2,6-bis(5-(4-methylphenyl)-1-H-pyrazol-3-yl)pyridine with metal ions

Add time:08/23/2019    Source:sciencedirect.com

A novel bispyrazole derivative 2,6-bis(5-(4-methylphenyl)-1-H-pyrazol-3-yl)pyridine was synthesized and its structure was confirmed by 1H NMR, FTIR, MS techniques and elemental analysis. The binding interactions of BMPP with Cd2+, Co2+, Pb2+ and Cu2+ ions were investigated in MeOH–H2O solution by fluorescence quenching technique at two temperatures (25 and 35 °C). Their quenching constants KSV, binding constants K, binding sites n and thermodynamic parameters (ΔH, ΔG and ΔS) were determined. The results indicated that the metal ions quenched the intrinsic fluorescence of the bispyrazole by forming the bispyrazole–metal complexes and their quenching process was a static quenching mechanism. In addition, the process of interaction was spontaneous and mainly ΔS-driven.

We also recommend Trading Suppliers and Manufacturers of 3-(4-Methylphenyl)-5-phenyl-2-isoxazoline (cas 19505-66-9). Pls Click Website Link as below: cas 19505-66-9 suppliers

Prev:Data ArticleSynthesis, characterization, crystal structure and Hirshfeld surface analysis of 1-(4-ethoxyphenyl)-3-(4-methylphenyl) prop-2en-1-one
Next:A multi-controllable selective fluorescent turn-on chemosensor for Al3+ and Zn2+ based on a new diarylethene with a 3-(4-methylphenyl)-1H-pyrazol-5-amine Schiff base group)