摘要/Abstract

将功能化的1，8-萘二甲酰亚胺衍生物与羟基萘甲醛缩合，合成了一种新颖的传感器分子2-羟基-1-奈甲醛缩N-（4-氨基苯基）-1，8-奈二甲酰胺席夫碱（H1）.通过核磁共振氢谱，碳谱和高分辨质谱等方法对H1进行了表征.测定了H1在二甲基亚砜（DMSO）/H₂O（V∶V=7∶3）溶液中的荧光光谱，其最大荧光发射波长为496 nm.H1的溶液在365 nm紫外灯照射下显示黄绿色荧光.H1对Fe³⁺具有荧光-比色双通道检测能力.当在H1的DMSO/H₂O溶液中分别加入Fe³⁺，Ag⁺，Ca²⁺，Ba²⁺，Co²⁺，Ni²⁺，Cd²⁺，Pb²⁺，Zn²⁺，Cu²⁺，Mg²⁺和Hg²⁺等阳离子时，只有Fe³⁺的加入使H1的荧光猝灭并且溶液颜色褪色.抗干扰实验结果表明，这一识别过程不受其它阳离子干扰.H1对Fe³⁺具有较高的检测灵敏度，对Fe³⁺的荧光光谱最低检测限和紫外-可见吸收光谱最低检测限分别为3.04×10^-8和2.71×10^-6 mol·L^-1.最后，制备了基于H1的检测试纸，该试纸可以方便快捷地检测水中的Fe³⁺.
关键词: 萘二甲酰亚胺衍生物, 席夫碱, 传感器分子, 荧光-比色双通道识别, Fe³⁺
A novel sensor molecule 2-hydroxyl-1-naldehyde-N-(4-aminophenyl)-1,8-naphthalimide (H1) based on functionalized naphthalimide Schiff Base derivative was synthesized. H1 was characterized by ¹H NMR, ¹³C NMR and HRMS. Furthermore, its fluorescence properties were studied in dimethyl sulfoxide (DMSO)/H₂O (V:V=7:3) solutions. Its maximum emission wavelength was 496 nm. The solution of H1 has yellow-green fluorescence under the UV lamp (365 nm). H1 showed fluorescence-colorimetric dual channel identification ability for Fe³⁺. With the addition of various metal ions into the H1 solution, only Fe³⁺ caused the fluorescence of the H1 quenching and the color disappeared. Other cations such as Ag⁺, Ca²⁺, Ba²⁺, Co²⁺, Ni²⁺, Cd²⁺, Pb²⁺, Zn²⁺, Cu²⁺, Mg²⁺ and Hg²⁺ could not induce similar response. The results of anti-disturbance experiment demonstrated that other cations can not interfere in the detection of Fe³⁺. H1 has good sensitivity for Fe³⁺, the fluorescence and UV-Vis detection limits of the H1 for Fe³⁺ are 3.04×10^-8 and 2.71×10^-6 mol·L^-1, respectively. Finally, the test strips based on the H1 were prepared, which could conveniently and efficiently detect Fe³⁺ in water.
Key words: naphthalimide derivative, Schiff base, sensor molecule, fluorescence-colorimetric dual channel identification, Fe³⁺


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