Issue 11, 2008

Hydrophilic oxybathophenanthroline ligands: synthesis and copper(ii) complexation

Abstract

Hydrophilic oxybathophenanthroline dendrons (generation 1–3) have been synthesized by treatment of 4,7-bis(4′-hydroxyphenyl)-1,10-phenanthroline with the corresponding bromo-functionalized etheraryl branching units containing triethylene glycol monomethyl end groups. Radiotracer experiments using 64Cu prove the rapid formation of stable copper(II) complexes in aqueous solution. These 64Cu complexes remain unchanged even upon addition of a high excess of glutathione as competing ligand, thus demonstrating the high stability of the formed copper(II) complexes. Electronic and EPR spectroscopy indicate the formation of [Cu(L)2(OH2)2]2+ (L = ligand) complexes in aqueous solution, confirmed by time-resolved laser fluorescence spectroscopy and supported by molecular mechanics modeling.

Graphical abstract: Hydrophilic oxybathophenanthroline ligands: synthesis and copper(ii) complexation

Article information

Article type
Paper
Submitted
26 Mar 2008
Accepted
08 May 2008
First published
16 Jul 2008

New J. Chem., 2008,32, 2016-2022

Hydrophilic oxybathophenanthroline ligands: synthesis and copper(II) complexation

H. Stephan, S. Juran, K. Born, P. Comba, G. Geipel, U. Hahn, N. Werner and F. Vögtle, New J. Chem., 2008, 32, 2016 DOI: 10.1039/B805136D

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