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Title: Morphologically and size uniform monodisperse particles and their shape-directed self-assembly

Monodisperse particles having: a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology are disclosed. Due to their uniform size and shape, the monodisperse particles self assemble into superlattices. The particles may be luminescent particles such as down-converting phosphor particles and up-converting phosphors. The monodisperse particles of the invention have a rare earth-containing lattice which in one embodiment may be an yttrium-containing lattice or in another may be a lanthanide-containing lattice. The monodisperse particles may have different optical properties based on their composition, their size, and/or their morphology (or shape). Also disclosed is a combination of at least two types of monodisperse particles, where each type is a plurality of monodisperse particles having a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology; and where the types of monodisperse particles differ from one another by composition, by size, or by morphology. In a preferred embodiment, the types of monodisperse particles have the same composition but different morphologies. Methods of making and methods of using the monodisperse particles are disclosed.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1476879
Assignee:
Intelligent Material Solutions, Inc. (Princeton, NJ); The Trustees of the University of Pennsylvannia (Philadelphia, PA) CHO
Patent Number(s):
10,066,163
Application Number:
15/678,344
Contract Number:
SC0002158
Resource Relation:
Patent File Date: 2017 Aug 16
Research Org:
Intelligent Material Solutions, Inc., Princeton, NJ (United States); The Trustees of the University of Pennsylvannia, Philadelphia, PA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

Other works cited in this record:

Self-aligning QCA based nanomaterials
patent, February 2007

Lanthanide (III)--doped nanoparticles and their applications
patent, June 2009

Morphologically and size uniform monodisperse particles and their shape-directed self-assembly
patent, November 2015

Solvents and new method for the synthesis of cdse semiconductor nanocrystals
patent-application, September 2007

Lanthanide-Doped Nayf4 Nanocrystals, Method Of Preparing And Uses Thereof
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Process For Producing Geometric Shaped Catalyst Bodies
patent-application, March 2010

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patent-application, September 2010

Up And Down Conversion Systems For Production Of Emitted Light From Various Energy Sources
patent-application, October 2010

Ultrasmall Monodisperse NaYF4:Yb3+/Tm3+ Nanocrystals with Enhanced Near-Infrared to Near-Infrared Upconversion Photoluminescence
journal, May 2010
  • Chen, Guanying; Ohulchanskyy, Tymish Y.; Kumar, Rajiv
  • ACS Nano, Vol. 4, Issue 6, p. 3163-3168
  • DOI: 10.1021/nn100457j

Comparative investigation on structure and luminescence properties of fluoride phosphors codoped with Er3+/Yb3+
journal, October 2009
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Controlled Synthesis and Luminescence of Lanthanide Doped NaYF4 Nanocrystals
journal, February 2007
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  • Chemistry of Materials, Vol. 19, Issue 4, p. 727-734
  • DOI: 10.1021/cm061887m

Synthesis of Hexagonal-Phase NaYF4:Yb,Er and NaYF4:Yb,Tm Nanocrystals with Efficient Up-Conversion Fluorescence
journal, December 2006
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