摘要
以8-氨基喹啉为原料,合成了一个新的比率型Zn2+荧光传感器1,利用紫外-可见和荧光分析方法考察了该荧光传感器对锌离子的识别行为。结果表明,在MeCN:Tris-HCl水溶液(体积比为1:9,Tris-HCl浓度为10mmol/L,pH=7.2)中,该荧光传感器1与Zn2+生成了1:1的络合物;紫外-可见光吸收波长和荧光发射波长发生红移,而且荧光颜色发生明显改变;竞争实验结果表明了其对锌离子有较高的选择性;通过比率荧光可实现其对锌离子的传感,检出限可达6.9×10-8 mol/L。
A new ratiometric fluorescent sensor for zinc ion was synthesized from 8-aminoquinoline tion, there length and fluorophore based on intramolecular charge transfer reaction. In a buffer aqueous soluwere a clear red shift in fluorescent sensor-Zn system of UV-Visible absorption wavefluorescence emission wavelength and an obvious change in it＇s fluorescence color.The composition of the fluorescent sensor with zinc ion was found to be 1 ： 1 by Job＇s method. The competition experiments show that the fluorescent sensor, detected zinc ion with high selectivity. The fluorescent sensor displayed high sensitivity for zinc ion with detection limit as low as 6.9 × 10.8 mol/L.
出处
《太原理工大学学报》
CAS
北大核心
2012年第4期440-443,共4页
Journal of Taiyuan University of Technology
基金
山西省农业科技攻关基金资助项目(20100311033)
