Metal ion complexation in acetonitrile by upper-rim allyl-substituted, di-ionized calix[4]arenes bearing two dansyl fluorophores
作者:Ümmühan Ocak、Miraç Ocak、Kazimierz Surowiec、Xiaodong Liu、Richard A. Bartsch
DOI:10.1016/j.tet.2009.06.038
日期:2009.8
of two dansyl (1-dimethylaminonaphthalene-5-sulfonyl) groups linked to the lower rims of a series of three, structurally related, di-ionized calix[4]arenes is investigated by means of absorption and emission spectrophotometry. Di(tetramethylammonium) salts of the di-ionized ligands, L, L1, and L2, which differ in having no, two and four allyl groups, respectively, on the upper rim of the calix[4]arene
Li +,Na +,K +,Rb +,Cs +,Mg 2 +,Ca 2 +,Sr 2 +,Ba 2 +,Ag +,Cd 2 +,Co 2 +,Fe 2 +,Hg的影响2+,Mn 2 +,Pb 2 +,Zn 2+和Fe 3+吸收和发射分光光度法研究了与三个结构相关的芳族杯[4]芳烃系列的下边缘连接的两个丹磺酰基(1-二甲基氨基萘-5-磺酰基)的光谱性质。二离子化的配体L,L1和L2的二(四甲基铵)盐用于在杯[4]芳烃骨架的上缘分别没有,两个和四个烯丙基分别不同。 MeCN中的荧光分光光度滴定实验。在与碱土金属阳离子络合后,发射光谱会发生明显的红移和丹磺酰荧光猝灭。对于碱金属阳离子,这些作用较弱。过渡金属阳离子和Pb 2+与配体强烈相互作用。特别地,Fe 3+,Hg 2+和Pb 2+导致丹磺酰荧光的猝灭大于99%。