中文摘要：

合成了一种新的镁离子荧光探针1（α-（喹啉-8氧-基）-乙酰水杨醛腙）（α-（quinolin-8-yloxy）-acetylsalicyl hydrazone）.探针1的乙醇溶液只发非常微弱的荧光,加入镁离子后在400—500 nm的波长范围可以观察到65倍的荧光增强,而加入其它碱金属或碱土金属离子则不会引起荧光光谱的显著变化.经测定探针1与镁离子以1∶1的比例络合,结合常数可以达到1.7×107（mo.lL-1）-1.

英文摘要：

A new fluorescent chemosensor α-（quinolin-8-yloxy）-acetyl salicyl hydrazone（1） was found to display fluorescence enhancement response selective for Mg2＋ over other common alkali and alkaline earth metal ions（Li＋,Na＋,K＋,Ca2＋,Sr2＋,and Ba2＋） in ethanol.In the absence of metal ions,chemosensor 1 exhibited little fluorescence emission.Upon the addition of Mg2＋,a 65-fold fluorescence enhancement in the range of 400—500 nm was observed and a 1∶1 metal-ligand complex was formed.The binding constants for chemosensor 1-Mg2＋ was 1.7×107（mol·L-1）-1.