Abstract:We designed a colorimetric chemosensor based on phthalazine ((E)-9-((2-quinoline-8-ol), denoted HPJ, for detecting Co 2+ . In the presence of Co 2+ , HPJ undergoes a colour variation from yellow to dark pink. Analysis of a Job plot and electrospray ionisation-mass spectra enabled the binding mode of HPJ to Co 2+ to be determined as a 1:1 ratio. The detection limit of Co 2+ with HPJ was 1.74 μM.In addition, the feasibility of using HPJ in the form of a test strip was confirmed.The sensing process of Co 2+ by HP… Show more
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