Very bright europium complexes that stain cellular mitochondria
作者:James W. Walton、Adrien Bourdolle、Stephen J. Butler、Marine Soulie、Martina Delbianco、Brian K. McMahon、Robert Pal、Horst Puschmann、Jurriaan M. Zwier、Laurent Lamarque、Olivier Maury、Chantal Andraud、David Parker
DOI:10.1039/c2cc35247h
日期:——
The synthesis, structure and photophysical properties of a series of highly emissive europium complexes is reported. Certain complexes enter mammalian cells by macropinocytosis and stain the mitochondria selectively, allowing observation of the Eu emission in cellulo by time-gated spectral imaging.
Comparative Analysis of Conjugated Alkynyl Chromophore-Triazacyclononane Ligands for Sensitized Emission of Europium and Terbium
作者:Marine Soulié、Frédéric Latzko、Emmanuel Bourrier、Virginie Placide、Stephen J. Butler、Robert Pal、James W. Walton、Patrice L. Baldeck、Boris Le Guennic、Chantal Andraud、Jurriaan M. Zwier、Laurent Lamarque、David Parker、Olivier Maury
DOI:10.1002/chem.201402415
日期:2014.7.7
A series of europium and terbium complexes based on a functionalized triazacyclononane carboxylate or phosphinate macrocyclic ligand is described. The influence of the anionic group, that is, carboxylate, methylphosphinate, or phenylphosphinate, on the photophysical properties was studied and rationalized on the basis of DFT calculated structures. The nature, number, and position of electron‐donating
NOVEL COMPLEXING AGENTS AND CORRESPONDING LANTHANIDE COMPLEXES
申请人:Lamarque Laurent
公开号:US20140336373A1
公开(公告)日:2014-11-13
The present invention concerns complexing agents of formula (I) in which a, b, c, chrom
1
, chrom
2
, chrom
3
, R
3
, R
4
and R
5
are as defined in the description. The invention also concerns lanthanide complexes comprising said complexing agents, as well as a method for synthesizing said agents.
Herein we report the straightforward preparation of chromophore-functionalized TACN ligand via Cu-free cross-coupling reactions using a common halogenated platform. This versatile methodology allows the preparation of original macrocyclic ligand featuring both optimized antenna for the sensitization of europium luminescence and sulfobetaine zwitterionic groups to ensure water solubility of the complex. In addition preliminary two-photon excited microscopy imaging experiments of fixed cells reveal that sulfobetaine groups are able to limit undesirable non specific interactions with biological surrounding. (C) 2014 Elsevier Ltd. All rights reserved.
AGENTS COMPLEXANTS ET COMPLEXES DE LANTHANIDE CORRESPONDANTS