COMPLEXATION EQUILIBRIA AND FLUORESCENT PROPERTIES OF CHELATING REAGENTS DERIVED FROM ETHYLENE-GLYCOL BIS(BETA-AMINOETHYLETHER)-N,N,N',N'-TETRAACETIC ACID

Authors
YUCHI A TANAKA A HIRAI M YASUI T WADA H NAKAGAWA G
Citation
A. Yuchi et al., COMPLEXATION EQUILIBRIA AND FLUORESCENT PROPERTIES OF CHELATING REAGENTS DERIVED FROM ETHYLENE-GLYCOL BIS(BETA-AMINOETHYLETHER)-N,N,N',N'-TETRAACETIC ACID, Bulletin of the Chemical Society of Japan, 66(11), 1993, pp. 3377-3381
Citations number
30
Categorie Soggetti
Chemistry
Journal title
Bulletin of the Chemical Society of Japan → ACNP
ISSN journal
00092673
Volume
66
Issue
11
Year of publication
1993
Pages
3377 - 3381
Database
ISI
SICI code
0009-2673(1993)66:11<3377:CEAFPO>2.0.ZU;2-D
Abstract
The complexation equilibria of divalent and lanthanoid metal ions with ,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA) and ] -6-methoxy-8-aminoquinoline-N,N,N',N'-tetraacetic acid (quin2) were st udied by pH titration. In lanthanoids, BAPTA shows a maximum stability for Pr3+, whereas quin2 has higher affinities for heavier ones. These trends are discussed in terms of the rigidity and donor atoms of thes e ligands. Intense fluorescence was observed for quin2 complexes of Gr oup-2 and -3 elements. Among the lanthanoids, only Sc, Y, La, Gd, and Lu enhance the fluorescence at around 380 nm.