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A quinoline derivative N-(2-hydroxyl-naphthylmethyl)-N-(quinol-8-yl)amine(2) was synthesized and characterized, which can selectively recognize Cu2+ over other metal ions such as Zn2+, Cd2+, Sn2+, Pb2+, Hg2+, Ni2+, Mg2+, Cr3+, Mn2+, Sr2+, K+, Ca2+, Na+, Ba2+ in acetonitrile/water(volume ratio 99:1). Cu2+ induced a new absorption peak at 464 nm in the absorption spectrum(ε=4.66×102 L·mol-1·cm-1) and quenched the fluorescence emission of quinoline derivative 2. The binding of quinoline derivative 2 to Cu2+ was in 1:1 model and stable constant was estimated to be 2.48×105 L·mol-1.
A quinoline derivative N- (2-hydroxyl-naphthylmethyl) -N- (quinol-8-yl) amine (2) was synthesized and characterized, which can selectively recognize Cu2 + over other metal ions such as Zn2 +, Cd2 +, Sn2 +, Pb2 + Hg2 +, Ni2 +, Mg2 +, Cr3 +, Mn2 +, Sr2 +, K +, Ca2 +, Na +, Ba2 + in acetonitrile / water volume ratio 99: 1. Cu2 + induced a new absorption peak at 464 nm in the absorption spectrum L · mol -1 · cm -1) and quenched the fluorescence emission of quinoline derivative 2. The binding of quinoline derivative 2 to Cu 2+ was in 1: 1 model and stable constant was estimated to be 2.48 × 105 L · mol -1.