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合成了一种新颖的锌离子荧光探针N′(2-羟基苄基)-4-(2-羟基苯亚甲基胺)-苯甲酰肼(HHB),该探针本身的荧光较弱,但当它与Zn2+配位时荧光增强,在475nm处产生一较宽的发射光谱,量子产率f=0.59(λex=370nm)。该化合物对Zn2+具有良好的选择性能,环境生物体系中大量存在的碱金属和碱土金属离子K+,Na+,Mg2+和Ca2+以及过渡金属离子Mn2+,Co2+,Ni2+和Cu2+等对Zn2+的检测没有明显影响。在生命体系的pH值范围(6.8～7.7),配合物HHB显示出对Zn2+检测较高的灵敏度。作为比较文中还研究了HHB水解的主要产物4-氨基苄腙-水杨醛(HB)对Zn2+的识别与传感性能。
A novel zinc ion fluorescent probe, N ’(2-hydroxybenzyl) -4- (2-hydroxybenzylideneamine) -benzoylhydrazide (HHB) was synthesized. , But when it is coordinated with Zn2 +, the fluorescence is enhanced, resulting in a broad emission spectrum at 475 nm. The quantum yield f = 0.59 (λex = 370 nm). The compound has good selectivity for Zn2 +, and there is no obvious influence on the detection of Zn2 + in K +, Na +, Mg2 + and Ca2 + and transition metal ions Mn2 +, Co2 +, Ni2 + and Cu2 + which are abundant in environmental biological system. In the pH range of life system (6.8 ~ 7.7), the complex HHB showed a higher sensitivity for Zn2 + detection. As a comparative study, the recognition and sensing of Zn2 + by 4-aminobenzhydrazone-salicylaldehyde (HB), the main product of HHB hydrolysis, were also studied.