SYNTHESIS AND STUDY OF DOUBLE (EPR ACTIVE AND FLUORESCENT) CHEMOSENSORS IN THE PRESENCE OF Fe³⁺ ION

Olga H. Hankovszky Institute of Organic and Medicinal Chemistry, University of Pécs, H-7643 Pécs, P.O. Box 99, Hungary

Tamás Kálai Institute of Organic and Medicinal Chemistry, University of Pécs, H-7643 Pécs, P.O. Box 99, Hungary

Éva Hideg Institute of Plant Biology, Biological Research Center, H-6701 Szeged, P. O. Box 521, Hungary

József Jekö ICN Hungary, H-4440 Tiszavasvári, P. O. Box 1, Hungary

Kálmán Hideg Institute of Organic and Medicinal Chemistry, University of Pécs, H-7643 Pécs, P.O. Box 99, Hungary

Abstract

The fluorescence properties of 4-aminophthalimide derivatives are influenced by the side-chain attached to the paramagnetic ring or its diamagnetic precursor. PET (photoinduced electron transfer)-induced fluorescence enhancement in the presence of Fe³⁺ ions was observed only in the case of diamagnetic basic side chain derivatives, since transient metal ions are present in biological systems, only double sensors lacking the above sensitivity are considered as potential reactive oxygen probes.

ACKNOWLEDGMENTS

This work was supported financially by the Hungarian Ministry of Education FKFP 0252/1999 and Hungarian National Research Foundation (OTKA T030262).

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SYNTHESIS AND STUDY OF DOUBLE (EPR ACTIVE AND FLUORESCENT) CHEMOSENSORS IN THE PRESENCE OF Fe³⁺ ION

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SYNTHESIS AND STUDY OF DOUBLE (EPR ACTIVE AND FLUORESCENT) CHEMOSENSORS IN THE PRESENCE OF Fe3+ ION

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SYNTHESIS AND STUDY OF DOUBLE (EPR ACTIVE AND FLUORESCENT) CHEMOSENSORS IN THE PRESENCE OF Fe³⁺ ION