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1. WO2006098923 - SEMICONDUCTOR NANOCRYSTALS AS NOVEL ANTENNAE FOR LANTHANIDE CATIONS AND ASSOCIATED METHODS

Publication Number WO/2006/098923
Publication Date 21.09.2006
International Application No. PCT/US2006/007869
International Filing Date 06.03.2006
IPC
C09K 11/56 2006.01
CCHEMISTRY; METALLURGY
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KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
08containing inorganic luminescent materials
56containing sulfur
C09K 11/54 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
54containing zinc or cadmium
C09K 11/88 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
88containing selenium, tellurium or unspecified chalcogen elements
C09K 11/67 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
67containing refractory metals
C09K 11/59 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
59containing silicon
CPC
C09K 11/883
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
88containing selenium, tellurium or unspecified chalcogen elements
881Chalcogenides
883with zinc or cadmium
Applicants
  • UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION [US]/[US] (AllExceptUS)
  • PETOUD, Stephane [CH]/[US] (UsOnly)
  • CHENGELIS, Demetra [US]/[US] (UsOnly)
  • YINGLING, Adrienne [US]/[US] (UsOnly)
Inventors
  • PETOUD, Stephane
  • CHENGELIS, Demetra
  • YINGLING, Adrienne
Agents
  • KIM, Lee
Priority Data
60/651,47411.03.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SEMICONDUCTOR NANOCRYSTALS AS NOVEL ANTENNAE FOR LANTHANIDE CATIONS AND ASSOCIATED METHODS
(FR) NANOCRISTAUX SEMI-CONDUCTEURS UTILISES COMME NOUVELLES ANTENNES POUR DES CATIONS DE LANTHANIDES ET PROCEDES ASSOCIES
Abstract
(EN)
The present invention relates to a new compostion of luminescent matter in which lanthanide cations are incorporated into semiconductor nanocrystals, and methods for making this new composition of matter. The semiconductor nanocrystal structure serves as an antenna for allowing the excited electronic states of the semiconductor nanocrystals to sensitize lanthanide cation emission. In comparison to organic antenna types, semiconductor nanocrystals are able to protect lanthanide cations from quenching solvent molecules without supplying high energy vibrations, thereby resisting non-radiative deactivation of the lanthanide cation excited states. Semiconductor nanocrystals have several advantages as species that absorb and emit photons, namely, broad absorbance bands with high epsilon values and emission wavelengths that can be easily tuned through their size, which is controlled through synthesis conditions. Lanthanide cations also have several advantages-sharp emission bands and long luminescence lifetimes.
(FR)
La présente invention concerne une nouvelle composition de matière luminescente dans laquelle des cations de lanthanides sont incorporés dans des nanocristaux semi-conducteurs, ainsi que des procédés destinés à fabriquer cette nouvelle composition de matière. La structure à nanocristaux semi-conducteurs sert d'antenne pour permettre aux états électroniques excités des nanocristaux semi-conducteurs de sensibiliser l'émission de cations de lanthanides. En comparaison avec les types d'antennes organiques, les nanocristaux semi-conducteurs sont capables de protéger les cations de lanthanides contre les molécules de solvants d'extinction sans application de vibrations hautement énergétiques, d'où une résistance à la désactivation non radiative des états excités des cations de lanthanides. Les nanocristaux semi-conducteurs présentent plusieurs avantages en tant qu'espèces absorbant et émettant les photons, et notamment de larges bandes d'absorbance présentant des valeurs epsilon élevées et des longueurs d'ondes d'émission pouvant être facilement réglées par l'intermédiaire de leur taille, laquelle est régulée par les conditions de synthèse. Par ailleurs, les cations de lanthanides présentent plusieurs avantages, soit des bandes d'émission pointues et de longues durées de vie en termes de luminescence.
Also published as
EP6737089
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