Global to push GA events into
skip to main content

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:
1226079
Assignee:
THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA CHO
Patent Number(s):
9,181,477
Application Number:
13/876,266
Contract Number:
SC0002158
Resource Relation:
Patent File Date: 2011 Oct 03
Research Org:
THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, Philadelphia, PA (United States) INTELLIGENT MATERIAL SOLUTIONS, INC., Princeton, NJ (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Other works cited in this record:

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

Similar records in DOepatents and OSTI.GOV collections: