一种酰腙类荧光探针的合成及其对Al3+的识别性能研究  

Synthesis of Acylhydrazone based Fluorescent Probe for Al( Ⅲ) and Its Property

作　　者：龙昭现 江光奇[1,2] LONG Zhao-xian;JIANG Guang-qi(College of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering of Ministry of Education,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]贵州大学精细化工研究开发中心绿色农药和农业生物工程教育部重点实验室,贵州贵阳550025

出　　处：《化学试剂》2019年第9期972-976,共5页Chemical Reagents

基　　金：贵州省联合基金项目(黔科合LH字[2014]7619);贵州大学教改项目(JG2013014)

摘　　要：以1,2,4,5-四溴甲基苯和2,4-二羟基苯甲醛为反应原料,通过两步合成反应得到一种新型的酰腙类荧光探针。化合物在V(DMSO)∶V(水)=19∶1的溶剂中对Al^3+具有较好的选择性,在446 nm波长处有明显的荧光增强作用。通过Job法、核磁滴定、质谱分析表明,探针与Al^3+的配合比为1∶2,由光谱滴定实验可知,探针对Al^3+的最低检出限为1. 16×10^-7mol/L,配合常数为2. 28×10^3L/mol。此外,实际应用研究表明,荧光探针可以用于自来水和河水中一定浓度范围内Al^3+的检测。An acylhydrazone based fluorescent probes was synthesized by two-step reaction with tatrakis( bromomethyl) benzene and 2,4-dihyoxybenzaldehyde as raw materials.The compound showed excellent selectivity for Al^3+ in the V( DMSO)∶V( H2 O)=19 ∶1 solution,showing remarkable fluorescence enhancement effects towards Al^3+ at the emission wavelength of 446 nm.The stoichiometry of 1 ∶2 of the Al(Ⅲ) complexes were determined by Job’s plots,1 HNMR titration experiments and LC-MS analysis.The spectroscopic titration indicated that the detection limits of the probe for Al^3+ was 1. 16×10^-7 mol/L and the complexing constant of the probe to Al^3+ was 2. 28×10^3 L/mol.Furthermore,the probe can be used for the determination of Al^3+ in the river water and tap water samples.

关 键 词：酰腙 荧光探针 铝 

分 类 号：O614.3[理学—无机化学]