A novel coumarin Schiff-base as a Ni(II) ion colorimetric sensor.
A novel coumarin Schiff base compound (L) prepared from 7-diethylaminocoumarin-3-aldehyde and 3-amino-7-hydroxycoumarin was synthesized and evaluated as a chemoselective Ni(2+) sensor. Addition of Ni(2+) to CH(3)CN solution of L resulted in a rapid color change from yellow to red together with a large red shift from 465 to 516 nm. Moreover, other common alkali-, alkaline earth-, transition- and rare earth metal ions induced no or minimal spectral changes. Experimental results indicated that L could be used as a potential Ni(2+) colorimetric and naked-eye chemosensor in CH(3)CN solution.
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China. lingyun@scut.edu.cn
Lingyun
L
Wang
Decheng
D
Ye
Derong
D
Cao
D015374:Biosensing Techniques; D002412:Cations / Q000737:chemistry*; D003124:Colorimetry; D003374:Coumarins / Q000737:chemistry*; D005453:Fluorescence; D015394:Molecular Structure; D009532:Nickel / Q000032:analysis / Q000737:chemistry*; D012545:Schiff Bases; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet
D002412:Cations; D003374:Coumarins; D012545:Schiff Bases; D012996:Solutions; D009532:Nickel; C030123:coumarin