Synthesis of New Mixed-ligands Amphiphilic Ruthenium Complex and Its Naked-eye Detectable Recognition of Hg2+

Abstract

Abstract:

4,4′-Di(p-methylphenyl)-2,2′-bipyridine was synthesized via modified routine with a high yield of 15.3%,and was used as a ligand to form a new mixed-ligand amphiphilic ruthenium complex,cis-N,N-4,4′-di(p-methylphenyl)-2,2′-bipyridine-N,N-4,4′-dicarboxy-2,2′-bipyridine-N,N-dithiocyanato ruthenium(Ⅱ). This new mixed-ligands amphiphilic ruthenium complex was characterized by IR,UV-Vis,1H NMR and Maldi-TOF MS spectra and firstly used to detect Hg²⁺Its MLCT absorption(530 nm) was blue-shifted to 485 nm when Hg²⁺ was added to DMF-ethanol(volume ratio 1∶9) solution of the complex. The complex was combined quantitatively with Hg²⁺ not with other metal cations by the molar ratio of 1∶1,indicating that it can be used as a selective naked-eye sensor for Hg²⁺Its detective limit is 0.5×10-6 mol/L.

Key words: Amphiphlic ruthenium complex; MLCT absorption spectrum; Hg2+ recognition; Naked recognition

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LI Xiang-Hong, DUAN Xin-Fang, LI Fu-You, HUANG Chun-Hui. Synthesis of New Mixed-ligands Amphiphilic Ruthenium Complex and Its Naked-eye Detectable Recognition of Hg²⁺[J]. Chem. J. Chinese Universities, 2006, 27(3): 419.

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Synthesis of New Mixed-ligands Amphiphilic Ruthenium Complex and Its Naked-eye Detectable Recognition of Hg²⁺

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