Synthesis, Crystal Structure and Fluorescence Property of N-n-butyl-4-di(bromoethyl)amino-1,8-naphthalimide

摘要

The halogen as a kind of alkylating reagent is used to introduce new group to realize the fluorescence sensors efficient of metal ion detection.The substituent at C-4 position was double bromine,which defined that the halogen as an alkylating reagent should be further researched and detected for Hg2+.Therefore,the N-n-butyl-4-[di(bromoethyl)]amino-1,8-naphthalimide has been synthesized to detect some metal ions.The title compound has been prepared via substitute reaction and was characterized by IR,1H NMR,13C NMR,and MS.It crystallizes in triclinic,space group Pi with a =9.0071(18),b =9.804(2),c =13.073(3) A,α =73.17(3),β =71.73(3),γ =62.95(3)°,Z =2,V=961.5(3) A3,Dc =1.666 g/cm3,F(000) =484,μ(MoKα) =4.232 mm-1,R =0.0429 and wR =0.1004.The presence of intermolecular hydrogen bonds as well as π-π stacking interaction led to the stability of the compound.The fluorescence intensity was obviously lower than that of other ions when Hg2+ was added with the concentration of 1 × 10-5 mol·L-1.