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An efficient pyrimidine-based colorimetric chemosensor for naked-eye recognition of copper in aqueous medium
被引:0
|作者:
Dhara, Anamika
[1
]
Guchhait, Nikhil
[2
]
Bhattacharya, Subash Chandra
[1
]
机构:
[1] Jadavpur Univ, Dept Chem, Kolkata 700032, India
[2] Univ Calcutta, Dept Chem, 92 Acharya Prafulla Chandra Rd, Kolkata 700009, India
关键词:
Colorimetric chemosensor;
hydrazino pyrimidine;
Cu2+ recognition;
DFT study;
test kits;
FLUORESCENCE SENSOR;
FLUORENONE;
COMPLEX;
CU(II);
WATER;
CU2+;
D O I:
暂无
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A pyrimidine-based receptor 1-(9H-fluoren-9-ylidene)-2-(4,6-dimethylpyrimidin-2-yl)hydrazine (HPF) was designed for naked-eye detection of Cu2+ with high selectivity in the presence of other competitive metal ions. In aqueous solution, upon addition of Cu2+ to HPF a color change from yellow to wine-red due to complex formation. The detection limit (5.03 x 10(-8) M) of HPF for Cu2+ ions is much lower than that recommended by WHO in drinking water (31.5 mu M). The sensor shows consistent performance in a pH value range of 4 to 11. Moreover, test strips based on receptor HPF were fabricated, which could act as a handy and efficient Cu2+ test for "in-the-field" measurement of Cu2+.
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页码:781 / 790
页数:10
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