摘要
一新荧光灯探查， NPQ-C，被综合。NPQ-C 基于 naphthalimide 衍生物并且为 Cr3+ 离子展出了高选择和敏感。作为一放大 Cr3+ 荧光灯探查，它的荧光光谱显示出 5.5 褶层在在有 Cr3+ 的绑定上的 500 nm 的信号的紧张的改进。基于荧光滴定系列和 Job's-plot 分析，有 Cr3+ 的 NPQ-C 的有约束力的模式被建议。荧光紧张与在从 0 ～ 10 的一个范围的 Cr3+ 阳离子的集中是线性的吗？？
A new fluorescent probe, NPQ-C, was synthesized. NPQ-C was based on the naphthalimide derivatives and exhibited high selectivity and sensitivity for Cr3＋ ions. As a Cr3＋-amplified fluorescent probe, Its fluorescence spectrum showed 5.5-fold enhancement in the intensity of the signal at 500 nm on binding with the Cr3＋. Based on the fluorescence titration spectra and Job＇s-plot analysis, binding mode of NPQ-C with Cr3＋ was proposed. Fluorescence intensity was linear with concentration of Cr3＋ cation in a range from 0 to 10 μmol·L-1. NPQ-C was also sensitive for Cr3＋. The detection limit was calculated to be 0.20 pmol.L-1 which indicated that NPQ-C was sensitive to Cr3＋.
基金
The authors gratefully acknowledge the National Nature Science Foundation of China，the support from the Fundamental Research Funds for the Central Universities,the Opening Foundation of Zhejiang Provincial Top Key Discipline,and Baihehua Group
