A simple hydrazone as a multianalyte (Cu2+, Al3+, Zn2+) sensor at different pH values and the resultant Al3+ complex
Wei-Na Wu1, Hao Wu1, Yuan Wang1
1College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University Jiaozuo 454000 P. R. China wangyuan08@hpu.edu.cn bzliu@hpu.edu.cn.
Abstract:
A new colorimetric and fluorescence molecular chemosensor based on triazole hydrazone can be used as a multi-probe for selective detection of Al3+, Zn2+, and Cu2+ by monitoring changes in the absorption and fluorescence spectral patterns. Results show that Al3+ and Zn2+ ions can induce remarkable fluorescence enhancement at pH 6.0 and pH 10.0, respectively, while the addition of Cu2+ ions leads to a significant UV-visible absorption enhancement in the visible range at pH 6.0. In addition, the resultant Al3+ complex could act as an 'on-off' fluorescence sensor for F-. The fluorescence sensor was also used to monitor intracellular Al3+, Zn2+, and F- in Hela cells.
More Related Videos
Related Concept Videos
Complexometric Titration: Ligands
Extraction: Advanced Methods
Formation of Complex Ions
Complexometric Titration: Overview
EDTA: Auxiliary Complexing Reagents
Ladder Diagrams: Complexation Equilibria
The formation constant, K1, for the formation of Cd(NH3)2+ complex from cadmium and ammonia is 3.55 × 102. Log K1 (i.e. pNH3) is 2.55, and...


