Fluorescent chemosensors for metal ions based on 3-(2-benzoxazol-5-yl)alanine skeleton

被引：11
|
作者：
Milewska, Magda [1 ]
Guzow, Katarzyna [1 ]
Wiczk, Wieslaw [1 ]
机构：
[1] Univ Gdansk, Fac Chem, PL-80952 Gdansk, Poland
来源：
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY | 2010年 / 8卷 / 03期
关键词：
Benzoxazol-5-yl-alanine; Ratiometric sensor; Chelate complex; Absorption; Fluorescence; PHOTOPHYSICAL PROPERTIES; ZINC IONS; TRANSITION; SENSORS; DESIGN; COMPLEXES; PROBES; BENZOXAZOLE; FLUOROPHORE; DEVICES;
D O I：
10.2478/s11532-010-0036-9
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The ability of new chelate ligands, benzoxazol-5-yl-alanine derivatives substituted in position 2 by heteroaromatic substituent, to form complexes with selected metal ions in acetonitrile are studied by means of absorption and steady-state and time-resolved fluorescence spectroscopy. Among the ligands studied, only azaaromatic derivatives form stable complexes with transition metal ions in the ground state. Their absorption bands are bathochromically shifted enabling to use those ligands as ratiometric sensors. The fluorescence of each ligand is quenched by metal ions, however, in the presence of Cd(II) and Zn(II) ions a new red shifted emission band is observed.
引用
收藏
页码：674 / 686
页数：13
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