间-双（2′-N，N′-苯甲胺基-1-萘基）甲氧基苯的合成及对Fe 3＋和Cu2＋的荧光传感性能

摘要

A nonel fluorescence sensor prepared from m‐xylene ,salicylaldehyde and 1‐naphthylamine was designed and synthesized .Its structure was characterized by IR ,NMR and MS .The study for the interaction of the synthesized compound with various metal ions (Li+ , Na+ , K+ , Ag+ , Zn2+ , Co2+ ,Ni2+ ,Cu2+ ,Cd2+ ,Mn2+ ,Hg2+ ,Al3+ ,Cr3+ ,Fe3+ ) was performed by UV‐Vis absorption and fluorescence spectra technique .The fluorescence spectroscopic of the sensor 1 toward Cu2+ and Fe3+ were quenched ,under idential conditions ,and nearly no fluorescence intensity changes were ob‐served in emission spectra with other ions .The results showed that the compound 1 displayed a selec‐tive recognition for Cu2+and Fe3+ and formed stoichiometry 1∶1 complex in CH3 CN/H2 O solution . T he binding constant ( K ) w ere calculated about (2 8.3 ± 0 4.2 ) × 103 and (8 6.9 ± 0 3.2 ) × 103 L・mol-1 and the detection limit were 2 5.84 4 × 10-4 and 1 2.34 2 × 10-5 mol・L-1 according to the titra‐tion using fluorescence titration method ,respectively .%以间二甲苯、水杨醛和α‐萘胺等为原料合成了荧光化学传感器1，并经红外、核磁、质谱表征了产物的结构．用紫外光谱、荧光光谱滴定实验的方法研究了金属离子和化合物的相互作用．结果表明传感器1对Cu2＋和Fe3＋表现出高选择性荧光响应，受常见离子干扰较小，化合物1与Cu2＋和Fe3＋结合形成1∶1的配合物，其结合常数分别为（28．3±04．2）×103和（86．9±03．2）×103 L・mol－1，检出限分别为25．844×10－4和12．342×10－5mol・L－1．