摘要
以4-硝基-1,8-萘酐、N,N-二甲基乙二胺为主要原料合成了一种荧光探针:4-(2′-N,N-二甲基氨基乙基)氨基-N-(2-N,N-二甲基氨基)乙基-1,8-萘酰亚胺(DDN)。研究了其紫外可见吸收和荧光发射光谱。考察了Fe3+,Cr3+,Mn2+,Ni2+,Zn2+,Cu2+和Co2+离子对该化合物荧光发射光谱的影响,结果表明Cr3+离子能使DDN荧光显著增强。滴定实验结果推测DDN与Cr3+的结合比为1∶2。在DDN浓度为1.0×10-5mol/L时,Cr3+浓度在5.0×10-7~2.0×10-5mol/L范围内,DDN荧光强度(F)与Cr3+离子浓度[Cr3+]呈良好的线性关系,线性方程为F=9430.3527+14600.2973[Cr3+],相关系数r=0.9976。检测限为4.3×10-7mol/L。
A novel fluorescent probe：4-（2＇-N,N-dimethylaminoethylamino）-N-（2-dimethylaminoethyl）-1,8-naphthalimide（DDN） was synthesized from 4-nitro-1,8-naphthalimide and N,N-dimethylaminoethylamine.Its UV-Vis and fluorescent spectra were investigated.The influence of the different metal cations,such as Fe3＋,Cr3＋,Mn2＋,Ni2＋,Zn2＋,Cu2＋ and Co2＋ ions on the fluorescent spectra of DDN was investigated.The results showed that the fluorescence intensity of DDN could be greatly increased by Cr3＋ ions.Titration plots indicated that DDN bound Cr3＋ at the molar ratio of 1∶2.When the concentration of DDN was1.0×10-5 mol/L,the fluorescence intensity（F） of DDN was linear dependent on the concentration of Cr3＋ ions（） in the range of 5.0×10-7～2.0×10-5 mol/L.The linear equation was F=9430.3527＋14600.2973 ,correlation coefficient r=0.9976.The detection limit was 4.3×10-7 mol/L.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2010年第5期539-543,共5页
Chemical Research and Application
基金
国家自然科学基金项目(20574049)资助
江苏省教育厅自然科学基金项目(06KJB150103)资助
