A New Reactive 1,8-Naphthalimide Derivative for Highly Selective and Sensitive Detection of Hg2.
A 1,8-naphthalimide derivative with a reactive aliphatic hydroxyl was designed and synthesized as a fluorescent probe. Its structure was characterized by IR,1H NMR,13C NMR, LC-MS and HPLC. The probe showed high selectivity and sensitivity to Hg2+over other metal ions such as Pb2+, Na+, K+, Cd2+, Cr3+, Zn2+, Cu2+, Ni2+, Ca2+, Fe3+, Fe2+, Co2+, Mn2+and Mg2+in MeCN/H2O (15/85, v/v). The increase in fluorescence intensity was linearly proportional to the concentration of Hg2+in the range of 18-40 μM with a detection limit of 1.38 × 10-7mol/L. The probe could work in a pH span of 4.3-9.0 and respond to Hg2+quickly with strong anti-interference ability. Job's plot suggested a 1:2 complex of the probe and Hg2+.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China.|Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou, Jiangsu, 215123, China.
Feng
F
Lv
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China.|Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou, Jiangsu, 215123, China.
Yufen
Y
Chen
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China.|Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou, Jiangsu, 215123, China.
Tengxuan
T
Tang
College of Pre-clinical Medical and Biological Science, Soochow University, Suzhou, 215123, China. chenyh@suda.edu.cn.
Yuhua
Y
Chen
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, China. xdm.sd@163.com.|Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou, Jiangsu, 215123, China. xdm.sd@163.com.
Dongmei
D
Xu
Fluorescent probe; Hg2+; Naphthalimide; Phenyl isothiocyanate