Publications related to Luminescent Bimetallic Lanthanide Bioprobes for Cellular Imaging with Excitation in the Visible-Light Range

Luminescent lanthanides bioprobes emitting in the visible and/or near-infrared ranges

This Ph.D. work deals with the development of lanthanide-based bioprobes for biomedical analyses and imaging. For this purpose, two different approaches have been followed, one focusing on visible-emitting complexes, while the second addresses the sensitiz ...

EPFL2008

Effect of the length of polyoxyethylene substituents on luminescent bimetallic lanthanide bioprobes

Jean-Claude Bünzli, Anne-Sophie Chauvin, Caroline Vandevyver, Bo Song

The new homoditopic ligand

H_2L^{C2'}

self-assembles with lanthanide ions (

Ln^{III}

) to yield neutral bimetallic helicates of overall composition

[Ln_2(L^{C2'})_3]

; it is fitted with two hexakis(oxyethylene) chains to test their effects on the thermo ...

2008

A Versatile Ditopic Ligand System for Sensitizing the Luminescence of Bimetallic Lanthanide Bio-Imaging Probes

Jean-Claude Bünzli, Anne-Sophie Chauvin, Caroline Vandevyver, Bo Song, Steve Comby

The homoditopic ligand 6,6’- [methylenebis(1-methyl-1H-benzimid- azole-5,2-diyl)]bis(4-{2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy}pyridine-2-carboxylic acid) (H2LC2) has been tailored to self-assemble with lanthanide ions (LnIII), which results in the formatio ...

2008

Tuning the self-assembly of lanthanide triple stranded heterobimetallic helicates by ligand design

Rosario Scopelliti, Jean-Claude Bünzli, Thomas Binderup Jensen

The heterobitopic ligands LAB4 and LAB5 have been designed and synthesised with the ultimate aim of self-assembling dual-function lanthanide complexes containing either a magnetic and a luminescent probe or two luminescent probes emitting at different wave ...

2008

Near-Infrared Luminescence of Nine-Coordinate Neodymium Complexes with Benzimidazole-Substituted 8-Hydroxyquinolines

Rosario Scopelliti, Jean-Claude Bünzli, Frédéric Gumy

A new class of benzimidazole-substituted 8-hydroxyquinoline ligands has been prepared that contain a monoanionic tridentate N,N,O-coordinating unit. These ligands form charge-neutral lanthanide complexes of the type [Ln(LR) 3] · nH2O or [Ln2(L2)3] · nH2O ( ...

2008

Acetonitrile exchange kinetics on di- and trivalent lanthanide ions

Gabriella Eva Bodizs

The knowledge and understanding of the mechanism as well as the rate constant of the solvent exchange reactions are fundamental, since these reactions represent an important step in complex formation reactions on metal ions. Solvent exchange reactions in a ...

EPFL2008

Lanthanide Bimetallic Helicates for in Vitro Imaging and Sensing

Jean-Claude Bünzli, Anne-Sophie Chauvin, Caroline Vandevyver, Bo Song, Steve Comby

As the need for targeting luminescent biolabels increases, for mapping selected analytes, imaging of cells and organs, and tracking in cellulo processes, lanthanide bimetallic helicates are emerging as versatile bioprobes. The wrapping of three ligand stra ...

2008

Metal-organic coordination interactions in Fe-Terephthalic acid networks on Cu(100)

Klaus Kern, Giovanni Costantini

Metal-organic coordination interactions are prime candidates for the formation of self-assembled, nanometer-scale periodic networks with room-temperature structural stability. We present X-ray photoelectron spectroscopy measurements of such networks at the ...

2008

Visible-Light Excitation of Infrared Lanthanide Luminescence via Intra-Ligand Charge-Transfer State in 1,3-Diketonates Containing Push-Pull Chromophores

Rosario Scopelliti, Jean-Claude Bünzli, Frédéric Gumy

A new 1,3-diketonato ligand containing both an electron-donor [4-(dimethylamino)benzene] and an electron-acceptor (4- nitrobenzene) group and its lanthanide complexes have been prepared. They display an intense intra-ligand charge-transfer absorption trans ...

2008

A Novel Strategy for the Design of 8-Hydroxyquinolinate- Based Lanthanide Bioprobes That Emit in the Near Infrared Range

Jean-Claude Bünzli, Caroline Vandevyver

A new polydentate tripodal ligand T2soxMe was synthesized to take advantage of the chelating effect of tridentate 8- hydroxyquinolinate subunits. Potentiometric and spectrophotometric titrations reveal seven pKa values of between 3.7 and 10.2. In water, th ...

2007

Luminescent Bimetallic Lanthanide Bioprobes for Cellular Imaging with Excitation in the Visible-Light Range

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Luminescent lanthanides bioprobes emitting in the visible and/or near-infrared ranges

Effect of the length of polyoxyethylene substituents on luminescent bimetallic lanthanide bioprobes

A Versatile Ditopic Ligand System for Sensitizing the Luminescence of Bimetallic Lanthanide Bio-Imaging Probes

Tuning the self-assembly of lanthanide triple stranded heterobimetallic helicates by ligand design

Near-Infrared Luminescence of Nine-Coordinate Neodymium Complexes with Benzimidazole-Substituted 8-Hydroxyquinolines

Acetonitrile exchange kinetics on di- and trivalent lanthanide ions

Lanthanide Bimetallic Helicates for in Vitro Imaging and Sensing

Metal-organic coordination interactions in Fe-Terephthalic acid networks on Cu(100)

Visible-Light Excitation of Infrared Lanthanide Luminescence via Intra-Ligand Charge-Transfer State in 1,3-Diketonates Containing Push-Pull Chromophores

A Novel Strategy for the Design of 8-Hydroxyquinolinate- Based Lanthanide Bioprobes That Emit in the Near Infrared Range

Effect of the length of polyoxyethylene substituents on luminescent bimetallic lanthanide bioprobes

Tuning the self-assembly of lanthanide triple stranded heterobimetallic helicates by ligand design

Luminescent lanthanides bioprobes emitting in the visible and/or near-infrared ranges

Near-Infrared Luminescence of Nine-Coordinate Neodymium Complexes with Benzimidazole-Substituted 8-Hydroxyquinolines

A Versatile Ditopic Ligand System for Sensitizing the Luminescence of Bimetallic Lanthanide Bio-Imaging Probes

Acetonitrile exchange kinetics on di- and trivalent lanthanide ions

Lanthanide Bimetallic Helicates for in Vitro Imaging and Sensing

Metal-organic coordination interactions in Fe-Terephthalic acid networks on Cu(100)

Visible-Light Excitation of Infrared Lanthanide Luminescence via Intra-Ligand Charge-Transfer State in 1,3-Diketonates Containing Push-Pull Chromophores

A Novel Strategy for the Design of 8-Hydroxyquinolinate- Based Lanthanide Bioprobes That Emit in the Near Infrared Range