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1. WO2020007966 - ULTRABRIGHT LUMINESCENT LANTHANIDE NANOPARTICLES COMPRISING TERBIUM, WITH LONGER EXCITED-STATE LIFETIME

Publication Number WO/2020/007966
Publication Date 09.01.2020
International Application No. PCT/EP2019/067959
International Filing Date 04.07.2019
IPC
C09K 11/02 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
02Use of particular materials as binders, particle coatings or suspension media therefor
C09K 11/85 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
08containing inorganic luminescent materials
77containing rare earth metals
85containing halogen
CPC
C09K 11/025
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
02Use of particular materials as binders, particle coatings or suspension media therefor
025non-luminescent particle coatings or suspension media
C09K 11/779
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
08containing inorganic luminescent materials
77containing rare earth metals
7783containing two or more rare earth metals one of which being europium
779Halogenides
Applicants
  • UNIVERSITÉ DE STRASBOURG [FR]/[FR]
  • CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE [FR]/[FR]
  • UNIVERSITE PARIS-SACLAY [FR]/[FR]
  • HONG KONG BAPTIST UNIVERSITY
Inventors
  • WONG, Ka-Leung
  • GOETZ, Joan
  • CHARBONNIERE, Loïc
  • HILDEBRANDT, Niko
  • NONAT, Aline
  • CHARPENTIER, Cyrille
  • CARDOSO DOS SANTOS, Marcelina
  • CIFLIKU, Vjona
Agents
  • RADZIMSKI, Eric
Priority Data
18305890.805.07.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ULTRABRIGHT LUMINESCENT LANTHANIDE NANOPARTICLES COMPRISING TERBIUM, WITH LONGER EXCITED-STATE LIFETIME
(FR) NANOPARTICULES DE LANTHANIDE LUMINESCENTES À TRÈS HAUTE LUMINOSITÉ COMPRENANT DU TERBIUM, PRÉSENTANT UNE DURÉE DE VIE DE L'ÉTAT EXCITÉ PLUS LONGUE
Abstract
(EN)
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.
(FR)
L'invention concerne des nanoparticules de lanthanide luminescentes possédant simultanément une luminosité améliorée et une durée de vie accrue de l'état excité. Ces nanoparticules comprennent des ions terbium et des ions d'un second lanthanide, de préférence de l'europium, et sont revêtues de molécules de ligand chromophore liées à la surface de la nanoparticule. Le ligand est une molécule organique comprenant au moins un radical chromophore de formule (I) ou de formule (II) : dans lesquelles R est choisi parmi H, un groupe CN ou un groupe COOH. La durée de vie de l'état excité par phosphorescence est améliorée par transfert d'énergie depuis des ions terbium de surface à des ions centraux du second lanthanide. La nanoparticule peut en outre comprendre une molécule porteuse d'intérêt analytique fixée de manière covalente à au moins une molécule de ligand.
Also published as
IL279860
Latest bibliographic data on file with the International Bureau