Luminescence sensing systems, which enabled "naked eye detection"
of fluoride ion and catecholamines (adrenaline, noradrenaline, and
dopamine), were constructed. These systems are based on the ligand
exchange reaction between the analyte ion and a luminescent probe
ligand at a ternary complex. Ligand exchange reaction between fluoride
ion and flavonol in the ternary complex, [Zr(IV)EDTA(flavonol)] depresses
the intensity of blue fluorescence, providing a simple fluorescent
detection system of fluoride ion. The ternary complex consisting of
Tb(III)-EDTA and sulfosalicylic acid as a signaling molecule exhibits
the characteristic sharp emission due to energy transfer luminescence,
is utilized for the facile determination of catecholamines.
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| Figure photograph
of fluorescence irradiated by handy UV lamp (Ex: 365nm). |
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| Relational Information |
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AIST Today Vol. 3, No. 2 (2003) 17
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No.8
Spring 2003
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