摘要
通过设计合成一种水溶性阳离子型柱芳烃季铵盐主体P,在柱芳烃主体的骨架苯环上引入了10个季铵盐基团.研究结果表明,在水溶性的阳离子柱芳烃季铵盐的水溶液中分别加入常见的金属阳离子(Pb 2^+、Cd 2^+、Ni 2^+、Co 2^+、Cr 3^+、Zn 2^+、Cu 2^+、Ca 2^+、Ag^+、Fe 2^+、Fe 3^+、Na^+、Hg 2^+、K^+和Mg 2^+)时,该水溶性柱芳烃主体能够选择性的在紫外光谱上识别Ag^+.且该水溶性柱芳烃主体对Ag^+的最低检测限可达到1.25×10^-5 M,络合常数为0.95×10^5 M^-1,这说明该水溶性柱芳烃与Ag^+之间的相互作用很强,对Ag^+具有良好的紫外选择性识别能力,可用作受体分子在纯水相中检测Ag^+.
A cationic water-soluble ionic column aromatic quaternary ammonium salt host P were designed and synthesized.And ten quaternary ammonium salt groups were introduced into the skeleton benzene ring of the column aromatic body.The results showed that the water-soluble aromatic column can selectively recognize Ag^+on UV spectrum when the common metal cations(Pb 2^+、Cd 2^+、Ni 2^+、Co 2^+、Cr 3^+、Zn 2^+、Cu 2^+、Ca 2^+、Ag^+、Fe 2^+、Fe 3^+、Na^+、Hg 2^+、K^+and Mg 2^+)were added into the aqueous solution of water-soluble cation column aromatic quaternary ammonium salt.Moreover,the detection limit of the water-soluble column aromatics for Ag^+could reach 1.25×10^-5 M,and their complexation constants were 0.95×10^5 M^-1,which indicated that the interaction between the water-soluble aromatics and Ag^+ions was very strong.These results indicated that the water-soluble aromatic column had good UV-Vis selective recognition ability for Ag^+,and could be used as a receptor molecule to detect Ag^+in pure water.
作者
师海雄
吴贵渊
李乔
张有明
魏太保
林奇
姚虹
SHI Hai-xiong;WU Gui-yuan;LI Qiao;ZHANG You-ming;WEI Tai-bao;LIN Qi;YAO Hong(College of Chemical Engineering,Lanzhou University of Arts and Science,Lanzhou 730010,China;School of Chemistry and Molecular Engineering,East China Normal University,Shanghai 200062,China;College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China)
出处
《兰州文理学院学报（自然科学版）》
2020年第6期45-50,共6页
Journal of Lanzhou University of Arts and Science(Natural Sciences)
基金
国家自然科学基金项目(21662031)
甘肃省教育厅高等教育教学成果培育项目
兰州文理学院2019年校级创新创业教育改革项目。
关键词
阳离子识别
芳烃
银离子
ion recognition
pillar[5]arene
Ag^+
