Complexation of metals with piperazine-containing azamacrocyclic fluorophores |
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| Authors: | Angelovski Goran Costisella Burkhard Kolarić Branko Engelhard Martin Eilbracht Peter |
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| Affiliation: | FB Chemie-Organische Chemie-NMR-Spektroskopie, Universit?t Dortmund, Otto-Hahn-Str. 6, D-44227 Dortmund, Germany. |
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| Abstract: | Azamacrocyclic fluorophores containing piperazine units were synthesized using sequential rhodium-catalyzed regioselective hydroformylation-reductive amination. A piperazine unit is introduced into the macrocycles to act simultaneously as electron donor and binding site. The macrocycles chelate divalent cations, either Zn2+ or Co2+, which considerably enhanced fluorescence. Complexation with Zn2+ was additionally confirmed by NMR. |
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