title: A novel colorimetric probe derived from isonicotic acid hydrazide for copper (II) determination based on internal charge transfer (ICT).
abstract: A novel isonicotic acid hydrazide Schiff base derivative N'-(3,5-di-tert-butyl-2-hydroxy-benzylidene) isonicotinohydrazide (DHIH) has been synthesized and developed as a high selective and sensitive colorimetric probe for Cu(2+) determination. Addition of Cu(2+) to the solution of DHIH resulted in a rapid color change from colorless to yellow together with an obvious new absorption band appeared at the range of 400-440 nm by forming a 1:1 complex. Experimental results indicated that the DHIH could provide absorption response to Cu(2+) with a linear dynamic range from 1.0×10(-5) to 1.0×10(-4)mol/L. The detection limit of Cu(2+) was 5.24×10(-7)mol/L with good tolerance of other metal ions.
authors.affiliation: College of Chemistry, Jilin University, Changchun 130023, PR China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Liu
authors.affiliation: College of Chemistry, Jilin University, Changchun 130023, PR China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Fei
authors.affiliation: Changchun Weiersai Biotec Pharmaceutical Co., Ltd., Changchun 130616, PR China.
authors.forename: Yanqun
authors.initials: Y
authors.lastname: Fei
authors.affiliation: Changchun Vocational Institute of Technology, Changchun 130033, PR China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Fan
authors.affiliation: College of Chemistry, Jilin University, Changchun 130023, PR China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Shan
authors.affiliation: College of Chemistry, Jilin University, Changchun 130023, PR China.
authors.forename: Guodong
authors.initials: G
authors.lastname: Feng
authors.affiliation: College of Chemistry, Jilin University, Changchun 130023, PR China. Electronic address: yfhuan@jlu.edu.cn.
authors.forename: Yanfu
authors.initials: Y
authors.lastname: Huan
mesh_terms: D003116:Color; D003124:Colorimetry / Q000379:methods*; D003300:Copper / Q000032:analysis*; D007539:Isonicotinic Acids / Q000138:chemical synthesis / Q000737:chemistry*; D057230:Limit of Detection; D015335:Molecular Probes / Q000737:chemistry; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D007539:Isonicotinic Acids; D015335:Molecular Probes; C000610349:N'-(3,5-di-tert-butyl-2-hydroxybenzylidene)isonicotinohydrazide; D012545:Schiff Bases; D003300:Copper
keywords: Colorimetric probe; Copper determination; Internal charge transfer (ICT); Isonicotic acid hydrazide