双(8-乙氧羰甲氧基-2-亚甲喹啉基)缩连氮的合成及其选择传感性能  

Synthesis of Bis(8-ethoxycarbonmethoxy-2-quinolinylidene)azine and Its Selective Sensibility

作　　者：刘利平[1] 张强[2] 

机构地区：[1]内蒙古农业大学理学院,呼和浩特010018 [2]内蒙古师范大学化学与环境科学学院,呼和浩特010022

出　　处：《无机化学学报》2013年第2期309-313,共5页Chinese Journal of Inorganic Chemistry

基　　金：内蒙古自然科学基金(No.2009MS0203);内蒙古师范大学科研基金(No.ZRYB09012)资助项目

摘　　要：以水合肼和2-甲酰基-8-乙氧羰甲氧基喹啉为原料合成了希夫碱双(8-乙氧羰甲氧基-2-亚甲喹啉基)缩连氮(BEQA),经1HNMR、元素分析等进行了结构表征,在乙醇-水混合溶剂中采用UV-Vis光谱法研究了H+、Ca2+、Mg2+、Sr2+、Mn2+、Co2+、Ni2+、Cu2+、Zn2+、Cd2+及Hg2+对BEQA光谱的影响,结果表明,BEQA分子的UV-Vis光谱仅对体系中的H+、Cu2+和Cd2+有特殊的选择传感性,在体系中的pH值或Cu2+、Cd2+浓度增大时,BEQA在380 nm处的吸收峰强度会逐渐减小,并伴随有不同程度的蓝移;Job′s法测定Cu2+和Cd2+与BEQA形成配合物的化学计量比为1∶4。Bis （8-ethoxycarbonmethoxy-2-quinolinylidene）azine （BEQA） was synthesized starting from 2-formyl-8- ethoxycarbonmethoxyquinoline with aqueous hydrazine, and its structure was characterized by 1H NMR and elementary analysis. The influence of H＋, Ca2＋, Mg2＋, Sr2＋, Mn2＋, Co2＋, Ni2＋, Cue＋, Zn2＋, Cd2＋ and Hg2＋ on the spectra of BEQA were investigated by the UV-Vis in ethanol-water mixed solvent. The result indicated that the UV-Vis spectra of BEQA behaved special selectivity and sensitivity to H＋, Cu2＋ and Cd2＋. Absorption intensity of BEQA at 380 nm was gently weakened with increasing pH and the concentrations of Cu2＋and Cd2＋, and its peak position was exhibited blue-shift in varying degrees. Determined results by Job＇s method indicated the formation of a 1：4 complex of BEQA with Cu2＋ and Cd2＋.

关 键 词：双(8-乙氧羰甲氧基-2-亚甲喹啉基)缩连氮(BEQA) 合成 光谱 金属离子 选择传感性 

分 类 号：O614[理学—无机化学] O623.75[理学—化学]