Publications by Anne-Sophie Chauvin

Autoxidation of a 4-iminoimidazolidin-2-one with a tertiary 5-hydrogen to its 5-hydroxy derivative

Chemoselective autoxidation of 4-imino-1,5-dimethyl-3-(4-nitrophenyl) imidazolidin-2-one (1b) to its 5-hydroxy derivative 2 occurred in solutions of DMSO-d(6), acetonitrile-d(3) or refluxing ethanol. Also bis(imidazolidin-5-yl) peroxide 5 was isolated as a ...

2008

Exploring the potential of europium(III) luminescence for the detection of phase transitions in ionic liquid crystals

Jean-Claude Bünzli, Anne-Sophie Chauvin, Frédéric Gumy, Joël Kocher

The ionic liquid crystal [C12-mim]Cl has been doped with 5 mol% europium nitrate and the photophysical properties of both the ionic liquid and the trivalent europium ion have been monitored with respect to temperature in the range of 248 to +120 uC. The re ...

2007

Non-Cytotoxic, Bifunctional EuIII and TbIII Luminescent Macrocyclic Complexes for Luminescence Resonant Energy- Transfer Experiments

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

A new macrocyclic ligand,

L^3

, has been synthesised, based on the cyclen framework grafted with three phenacyl light-harvesting groups and a C5-alkyl chain bearing a carboxylic acid function as a potential linker for biological material. Acidity constant ...

2007

Lanthanide Complexes with a Calix[8]arene Bearing Phosphinoyl Pendant Arms

Jean-Claude Bünzli, Anne-Sophie Chauvin

The phosphinoyl-substituted macrocyclic receptor B8bL8, derived from p-tert-butylcalix[8]arene, was synthesized and its structure was studied in solution. According to temperaturedependent 1H and 31P NMR spectroscopic data, the calix[8]arene adopts a so-ca ...

2007

A Polyoxyethylene-Substituted Bimetallic Europium Helicate for Luminescent Staining of Living Cells

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

The homoditopic ligand

H_2L^{C3}

has been designed to form neutral triple-stranded bimetallic helicates of overall composition [

Ln_2(L^{C3})_3

]. The grafting of the polyoxyethylene fragments ensures water solubility and also favors cell penetration whi ...

2007

New Opportunities for Lanthanide Luminescence

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

Trivalent lanthanide ions display fascinating optical properties. The discovery of the corresponding elements and their fist industrial uses were intimately linked to their optical properties. This relationship has been kept alive until today when many hig ...

2007

Luminescent lanthanide bimetallic triple-stranded helicates as potential cellular imaging probes

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

Water-soluble triple-stranded [Ln2(L)3] helicates have been successfully tested as imaging probes in human cervical adenocarcinoma cells (HeLa), the complex being not toxic and clearly staining their cytoplasm in a concentrationdependent manner. ...

2007

Synthesis and characterization of partially substituted at lower rim phosphorus containing calix(4)arenes

Rosario Scopelliti, Anne-Sophie Chauvin

The synthesis and characterization of several new phosphorus-containing partially lower rim substituted derivatives of 5,11,17,23-tetra(t-butyl) calix(4)arene (1) and 5,11,17,23-tetra(t-octyl)calix(4)arene (II), namely 5,11,17,23-tetra(t-butyl)-25,27-dihyd ...

Taylor & Francis2007

Stable 8-hydroxyquinolinate-based podates as efficient sensitizers of lanthanide near-infrared luminescence

Jean-Claude Bünzli, Anne-Sophie Chauvin, Steve Comby

New polydentate ligands (e.g., Tsox and TsoxMe) have been synthesized to take advantage of the chelating effect of bidentate 8-hydroxyquinolinate subunits connected to a N,N,N¢,N¢-tetraaminopropyl-1,2-ethylenediamine framework and with the aim of sensitizi ...

2006

Fluorinated β-Diketones for the Extraction of Lanthanide Ions: Photophysical Properties and Hydration Numbers of Their EuIII Complexes

Jean-Claude Bünzli, Anne-Sophie Chauvin, Frédéric Gumy

Tris(β-diketonato)europium(III) with a series of variably fluorinated ligands derived from 3,5-heptanedione were synthesised with the aim of determining their hydration state under extraction conditions. The number of coordinated water molecules was determ ...

2006

Anne-Sophie Chauvin

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Autoxidation of a 4-iminoimidazolidin-2-one with a tertiary 5-hydrogen to its 5-hydroxy derivative

Exploring the potential of europium(III) luminescence for the detection of phase transitions in ionic liquid crystals

Non-Cytotoxic, Bifunctional EuIII and TbIII Luminescent Macrocyclic Complexes for Luminescence Resonant Energy- Transfer Experiments

Lanthanide Complexes with a Calix[8]arene Bearing Phosphinoyl Pendant Arms

A Polyoxyethylene-Substituted Bimetallic Europium Helicate for Luminescent Staining of Living Cells

New Opportunities for Lanthanide Luminescence

Luminescent lanthanide bimetallic triple-stranded helicates as potential cellular imaging probes

Synthesis and characterization of partially substituted at lower rim phosphorus containing calix(4)arenes

Stable 8-hydroxyquinolinate-based podates as efficient sensitizers of lanthanide near-infrared luminescence

Fluorinated β-Diketones for the Extraction of Lanthanide Ions: Photophysical Properties and Hydration Numbers of Their EuIII Complexes

Lanthanide Complexes with a Calix[8]arene Bearing Phosphinoyl Pendant Arms

Autoxidation of a 4-iminoimidazolidin-2-one with a tertiary 5-hydrogen to its 5-hydroxy derivative

Exploring the potential of europium(III) luminescence for the detection of phase transitions in ionic liquid crystals

Non-Cytotoxic, Bifunctional EuIII and TbIII Luminescent Macrocyclic Complexes for Luminescence Resonant Energy- Transfer Experiments

A Polyoxyethylene-Substituted Bimetallic Europium Helicate for Luminescent Staining of Living Cells

New Opportunities for Lanthanide Luminescence

Synthesis and characterization of partially substituted at lower rim phosphorus containing calix(4)arenes

Luminescent lanthanide bimetallic triple-stranded helicates as potential cellular imaging probes

Stable 8-hydroxyquinolinate-based podates as efficient sensitizers of lanthanide near-infrared luminescence

Fluorinated β-Diketones for the Extraction of Lanthanide Ions: Photophysical Properties and Hydration Numbers of Their EuIII Complexes