Tethered Dinuclear Europium(III) Macrocyclic Catalysts for the Cleavage of RNA
作者:Kido Nwe、Christopher M. Andolina、Janet R. Morrow
DOI:10.1021/ja8037799
日期:2008.11.5
prepared. Studies using direct excitation ((7)F0 --> (5)D0) europium(III) luminescence spectroscopy show that each Eu(III) center in the mononuclear and dinuclear complexes has two water ligands at pH 7.0, I = 0.10 M (NaNO3) and that there are no water ligand ionizations over the pH range of 7-9. All complexes promote cleavage of the RNA analogue 2-hydroxypropyl-4-nitrophenyl phosphate (HpPNP) at 25 degrees