Sensitized Near-Infrared Lanthanide Luminescence from Nd(III)- and Yb(III)-Based Cyclen−Ruthenium Coordination Conjugates
摘要:
The development of novel mixed lanthanide-transition-metal (f-d) based supramolecular self-assemblies made from neodymium-and ytterbium-based tetraamide-functionalized cyclen complexes bearing a single 1,10-phenanthroline moiety coordinating to a Ru-II-(bipy)(2) (bipy = bipyridine) unit is described. Excitation of the Ru(II) metal-to-ligand charge-transfer band in water gave rise to long-wavelength sensitized emission from the Yb(III) or Nd(III) centers, observed in the near-infrared.
Sensitized Near-Infrared Lanthanide Luminescence from Nd(III)- and Yb(III)-Based Cyclen−Ruthenium Coordination Conjugates
摘要:
The development of novel mixed lanthanide-transition-metal (f-d) based supramolecular self-assemblies made from neodymium-and ytterbium-based tetraamide-functionalized cyclen complexes bearing a single 1,10-phenanthroline moiety coordinating to a Ru-II-(bipy)(2) (bipy = bipyridine) unit is described. Excitation of the Ru(II) metal-to-ligand charge-transfer band in water gave rise to long-wavelength sensitized emission from the Yb(III) or Nd(III) centers, observed in the near-infrared.
Mixed f−d Coordination Complexes as Dual Visible- and Near-Infrared-Emitting Probes for Targeting DNA
作者:Aline M. Nonat、Susan J. Quinn、Thorfinnur Gunnlaugsson
DOI:10.1021/ic900422z
日期:2009.6.1
A new family of mixed-lanthanide (Yb-III and Nd-III) transition-metal (f-d) cyclen-Ru-II(phen)(3) (phen = 1,10-phenanthroline) complexes were synthesized as dual visible- and near-infrared (NIR)-emitting DNA probes/sensors. Significant changes were seen in both the Ru-II visible and the Yb-III-centered NIR emission, which was switched off upon binding to DNA at pH 7.4. In contrast, no changes were seen in the Nd-III emission of the analogue f-d conjugate.