A naked-eye fluorescent sensor for copper(II) ions based on a naphthalene conjugate Bodipy dye

被引:47
作者
Baslak, Canan [1 ]
Kursunlu, Ahmed Nuri [1 ]
机构
[1] Selcuk Univ, Dept Chem, TR-42075 Konya, Turkey
关键词
TURN-ON FLUORESCENT; COLORIMETRIC SENSOR; CHEMOSENSOR; ARRAYS; NOSE;
D O I
10.1039/c8pp00137e
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A novel naphthalene-Bodipy dye (N-Bodipy) was designed, prepared and characterized. N-Bodipy showed a selective and sensitive recognition toward Cu(ii) ions as a fluorescent antenna group in acetonitrile/water over other metal cations. The complexation between Cu(ii) ions and N-Bodipy gave a specific color change as well as caused fluorescence quenching under long-wavelength light (365 nm). The remarkable quenching effect in fluorescence intensity centered at 538 nm was only observed in the presence of copper(ii) ions. Moreover, the orange color of N-Bodipy solution turned pale-yellow depending on the complexation effect in daylight. The complex stoichiometry was determined using a Job's plot and it was found to be 2:1 (ligand/metal). The binding constant was calculated with the Benesi-Hildebrand equation to be 1.39 x 10(10) M-1 and the detection limit was 1.28 M (LOD = 3/slope, is the standard deviation) for Cu(ii). The data proved that the binding between N-Bodipy and Cu(ii) is chemically reversible.
引用
收藏
页码:1091 / 1097
页数:7
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