Complexation of metals with piperazine-containing azamacrocyclic fluorophores.
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.
Angelovski
Goran
G
FB Chemie-Organische Chemie-NMR-Spektroskopie, Universität Dortmund, Otto-Hahn-Str. 6, D-44227 Dortmund, Germany.
Costisella
Burkhard
B
Kolarić
Branko
B
Engelhard
Martin
M
Eilbracht
Peter
P