荧光探针2-硼酸基苯甲醛-(2′-羟基-4′-磺酸基)萘腙的合成及对Pb^(2+)的识别  

Synthesis of 2-Borono-benzaldehyde-(2′-hydroxyl-4′-sulfoacid)Naphthalene Hydrazone and Recognition of Pb^(2+)

作　　者：肖敏[1,2] 吴芳英[1] 吴生彪[2] 

机构地区：[1]南昌大学化学系,江西南昌330031 [2]南昌大学共青学院,江西九江332020

出　　处：《分析科学学报》2015年第6期792-796,共5页Journal of Analytical Science

基　　金：国家自然科学基金(No.20965006);江西省教育厅基金(No.GJJ09040)

摘　　要：设计合成了2-硼酸基苯甲醛-(2′-羟基-4′-磺酸基)萘腙衍生物(2-BBHSNH),该化合物水溶性极好,识别体系不需任何有机介质。在pH=6.0的KH2PO4-NaOH缓冲溶液中,2-BBHSNH对Pb2+具有选择性识别作用,主客体分子间形成1∶1型的发光配合物。该配合物最大发射波长为568nm,稳定常数为4.3×104 L·mol^(-1)。荧光强度的变化值与Pb^(2+)浓度在5.0×10-7~1.0×10-4 mol·L^(-1)范围内呈现良好的线性关系,相关系数R=0.9983,检出限为9.7×10-8 mol·L^(-1)。将该方法用于环境水样中Pb2+的测定,回收率为111%~116%。2-Borono-benzaldehyde-（2′-hydroxyl-4′-sulfoacid）naphthalene hydrazone derivative 2-BBHSNH（the host 1）was designed and synthesized.Due to its good water solubility,the recognition system didn＇t need any organic medium.Research results showed that 2-borono-benzaldehyde-（2′-hydroxyl-4′-sulfoacid）naphthalene hydrazone possessed highly selective binding and recognition to Pb^2＋ in KH_2PO_4-NaOH buffer solution（pH=6.0）.The host 1and Pb^2＋ could form a 1∶1complex with strong fluorescence.The maximum emission wavelength of complex 1-Pb^2＋was 568 nm and the binding constant was 4.3×10^4L·mol^-1.The presence of the other metal ions led fluorescence spectra of host 1little change,such as Cu^2＋,Mn^2＋,Mg^2＋,Fe^2＋,Ca^2＋,Co^2＋,Ni^2＋,Hg^2＋,Cd^2＋,Ag＋ and so on.Fluorescence intensity and the concentration of Pb^2＋ presented good linear relationship from 5.0×10-7-1.0×10-4 mol·L^-1 with a correlation coefficient of 0.9983,and the detection limit of method was 9.7×10-8 mol·L^-1.The method was used to detect Pb^2＋in water sample from environment with the recovery of 111%-16%.

关 键 词：2-硼酸基苯甲醛-(2′-羟基-4′-磺酸基)萘腙衍生物 PB2+ 荧光光谱 

分 类 号：O657.39[理学—分析化学]