Centre National De La Recherche Scientifique

Universitéde Strasbourg

Université Louis Pasteur De Strasbourg

Hong Kong Baptist University

Université Paris-Saclay

Sicat

Université Paris—sud

Loïc Charbonniere

Raymond Ziessel

Aldo Roda

Nicolas Weibel

Massimo Guardigli

Cuong Pham-Huu

Marc J Ledoux

Niko Hildebrandt

Ka-Leung Wong

Ricardo Vieira

Joan Goetz

Aline Nonat

Marcelina Cardoso Dos Santos

Vjona Cifliku

Cyrille Charpentier

The invention provides luminescent lanthanide nanoparticles having simultaneously an improved brightness and an increased lifetime of the excited-state. These nanoparticles comprise terbium ions and ions of a second lanthanide, preferentially europium, and are coated with molecules of chromophore ligand bonded to the surface of the nanoparticle. The ligand is an organic molecule comprising at least one chromophore radical of formula (I) or of formula (II): wherein R is selected from H, CN group or COOH group. The phosphorescence excited-state lifetime is improved by energy transfer from surface terbium ions to core ions of the second lanthanide. The nanoparticle may further comprise a carrier molecule of analytical interest covalently attached to at least one ligand molecule.

Ultrabright luminescent lanthanide nanoparticles comprising terbium, with longer excited-state lifetime

The invention relates to compounds, to the complexes they form with a lanthanide, and to the use of the complexes for fluorescence marking or NMR imaging. The complex consists of an Ln ion and a ligand R&#x2014;C(X&#x2014;R)(R)&#x2014;NRR. Ris a functional group, X is a single bond or a hydrocarbon-based chain consisting of at least one alkylene or alkenylene group optionally comprising at least one hetero atom or an arylene. Ris an anionic group Aor a C-Calkylene or alkenylene group bearing at least one such group Aand optionally comprising at least one hetero atom. Ris H or a C-Calkylene or alkenylene group optionally containing at least one hetero atom, and optionally bearing at least one anionic group A. Ris a substituent with light-absorbing properties that forms chelate rings with Ln. Ris a substituent that forms chelate rings with Ln.

Lanthanide complexes, preparation and uses thereof

A composite comprising a support activated by impregnation and carbon nanotubes or nanofibers formed by vapor deposition, wherein the weight of said carbon nanotubes or nanofibers formed on the said support is at least equal to 10.

Composites based on carbon nanotubes or nanofibers deposited on an activated support for use in catalysis

Lanthanide complexes preparation and uses thereof

Growing community of inventors

Weyersheim, France

Loïc Charbonniere