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  1. 1 Open Chemistry

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  1. 1 2010

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  1. 1 Guzow K.

  2. 1 Milewska M.

  3. 1 Wiczk W.

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

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Milewska M., Guzow K., Wiczk W.
Open Chemistry
|
2010
|
vol. 8
|
issue 3
674-686
EN
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. [...]
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