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Jean-Claude Bünzli

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Publications associées (117)

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Single-Grain High-Efficiency Full-Visible-Spectrum White Emitters

Jean-Claude Bünzli

Full-visible-spectrum emission phosphors are promising candidates for next-generation white light-emitting diodes (WLEDs), overcoming the complex and high costs of traditional mixed phosphors. However, their practical application is hindered by low lumines ...

WILEY-V C H VERLAG GMBH2025

N-Aryl Chromophore Ligands for Bright Europium Luminescence

Rosario Scopelliti, Jean-Claude Bünzli, Svetlana Eliseeva

Sterically hindered N-aryl-benzimidazole pyridine-2-carboxylic acids (aryl = phenyl, 4-biphenyl, 2-naphthyl) readily form homoleptic, neutral, nine-coordinate europium complexes which display efficient sensitized luminescence in solid state and in dichloro ...

American Chemical Society2010

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

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

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

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

Jean-Claude Bünzli, Caroline Vandevyver, Steve Comby

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

Synthesis and Photophysical Properties of Ln(III)-DOTA-Bipy Complexes and Ln(III)-DOTA-Bipy-Ru-II Coordination Conjugates

Jean-Claude Bünzli, Svetlana Eliseeva

The synthesis and the systematic and comparative photo-physical study of a series of visible (Eu-III, Tb-III) and NIR-emitting (Nd-III, Yb-III) lanthanide complexes (Ln(2)L) and ruthenium lanthanide coordination conjugates (Ln(2)LRu) are reported. The Gd-I ...

Wiley-Blackwell2010

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

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

Role of Inner- and Outer-Sphere Bonding in the Sensitization of EuIII-Luminescence Deciphered by Combined Analysis of Experimental Electron Density Distribution Function and Photophysical Data

Jean-Claude Bünzli

A series of lanthanide adducts with different amounts of 1,10-phenanthroline, chloride ions, and water molecules in the inner and outer coordination spheres are investigated with the aim of relating the chemical bonding pattern in the crystals to the lumin ...

2008

Phosphor-converted light-emitting diodes in the marine environment: current status and future trends

Jean-Claude Bünzli

The exploitation and utilization of resources in marine environments have ignited a demand for advanced illumination and optical communication technologies. Light-emitting diodes (LEDs), heralded as "green lighting sources", offer a compelling solution to ...

ROYAL SOC CHEMISTRY2025

Thermodynamic Parameters Governing the Self-Assembly of Head–Head–Head Lanthanide Bimetallic Helicates

Rosario Scopelliti, Jean-Claude Bünzli, Thomas Binderup Jensen

The heterobitopic ligands LABX (X=1,2, 3,4 or 5),diff ering only by a Cl or NEt2 substituent,have been designed to complex with a pair of lanthanide ions to form triple-stranded bimetallic helicates of overall composition [Ln2ACHTUNGTRENUNG(LABX)3]6+. The ...

2007

2,2’-Bipyrimidine as Efficient Sensitizer of the Solid-State Luminescence of Lanthanide and Uranyl Ions from Visible to Near-Infrared

Jean-Claude Bünzli, Frédéric Gumy

Treatment of Ln(NO3)3.nH2O with 1 or 2 equiv 2,2-bipyrimidine (BPM) in dry THF readily afforded the monometallic complexes [Ln(NO3)3(bpm)2] (Ln=Eu, Gd, Dy, Tm) or [Ln(NO3)3(bpm)2]THF (Ln=Eu, Tb, Er, Yb) after recrystallization from MeOH or THF, respectivel ...

2009

Achieving Ultra-Broadband Sunlight-Like Emission in Single-Phase Phosphors: The Interplay of Structure and Luminescence

Jean-Claude Bünzli

The quest for artificial light sources mimicking sunlight has been a long-standing endeavor, particularly for applications in anticounterfeiting, agriculture, and color hue detection. Conventional sunlight simulators are often cost-prohibitive and bulky. T ...

Wiley2024

Surprisingly Bright Near-Infrared Luminescence and Short Radiative Lifetimes of Ytterbium in Hetero-Binuclear Yb-Na Chelates

Rosario Scopelliti, Jean-Claude Bünzli, Frédéric Gumy

New heterobinuclear lanthanide complexes with benzoxazole-substituted 8-hydroxyquinolines, [Ln(ligand)2(μ-ligand)2Na] (Ln: Yb, Lu), have been prepared and their structure established by X-ray crystallography, 1H NMR spectroscopy, and photophysical studies. ...

2009

Lanthanide-Based Peptide-Directed Visible/Near-Infrared Imaging and Inhibition of LMP1

Jean-Claude Bünzli, Yue Wu

A lanthanide-based peptide-directed bioprobe LnP19 (Ln = Eu or Yb) is designed as an impressive example of a small molecule-based dual-functional probe for the EBV oncoprotein LMP1. The peptide P19 (Pra-KAhx-K-LDLALK-FWLY-K-IVMSDKW-K-RrRK) is designed to s ...

AMER CHEMICAL SOC2021

Structural and Near-IR Luminescent Properties of Erbium-Containing Coordination Polymers

Jean-Claude Bünzli, Frédéric Gumy

The near-IR luminescence properties of two ErIII-containing coordination polymers, namely, [Er(btc)(H2O)5·3.5H2O] [(btc)3– = 1,3,5-benzenetricarboxylate] and [Er2(bdc)3- (H2O)4] [(bdc)2– = 1,4-benzenedicarboxylate] were investigated with the aim of testing ...

2009

Bladder Cancer Photodynamic Therapeutic Agent with Off-On Magnetic Resonance Imaging Enhancement

Jean-Claude Bünzli

Acting as an extracellular matrix protein receptor, alpha(v)beta(3) integrin becomes an appealing target for photodynamic therapy of bladder cancer. Here, specific alpha(v)beta(3)-integrin-targeting porphyrinato-gadolinium complexes (Gd-PEG-R-n) are demons ...

WILEY2019

Structure, reactivity and luminescence studies of triphenylsiloxide complexes of tetravalent lanthanides

Jean-Claude Bünzli, Marinella Mazzanti, Farzaneh Fadaei Tirani, Anne-Sophie Chauvin, Aurélien René Willauer

Among the 14 lanthanide elements (Ce-Lu), until recently, the tetravalent oxidation state was readily accessible in solution only for cerium while Pr(iv), Nd(iv), Dy(iv) and Tb(iv) had only been detected in the solid state. The triphenylsiloxide ligand rec ...

2022

Lanthanide luminescence for functional materials and bio-sciences

Jean-Claude Bünzli, Svetlana Eliseeva

Recent startling interest for lanthanide luminescence is stimulated by the continuously expanding need for luminescent materials meeting the stringent requirements of telecommunication, lighting, electroluminescent devices, (bio-)analytical sensors and bio ...

Royal Society of Chemistry2010

Brilliant Photoluminescence and Triboluminescence from Ternary Complexes of Dy-III and Tb-III with 3-Phenyl-4-propanoy1-5-isoxazolonate and a Bidentate Phosphine Oxide Coligand

Rosario Scopelliti, Jean-Claude Bünzli

Three new lanthanide heterocyclic beta-diketonate complexes [Dy(PPI)(3)(EtOH)(2)] (1), [Dy(PPI)(3)(DPEPO)] (2), and [Tb(PPI)(3)(DPEPO)] (3) [where HPPI = 3-pheny1-4-propanoyl-5-isoxazolone and DPEPO = bis(2(diphenylphosphino)phenyl)ether oxide] have been s ...

American Chemical Society2013

Lighting-up cancerous cells and tissues with lanthanide luminescence

Martinus Adela Maria Gijs, Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Hans-Anton Lehr

2011

Thermotropic lanthanidomesogens

Jean-Claude Bünzli

Due to their high and variable coordination numbers leading to poorly predictable threedimensional coordination spheres, the trivalent lanthanide metal ions are challenging molecular objects for introduction into thermotropic liquid crystals. Conversely, t ...

Royal Society of Chemistry2006