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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9773953 B1

PDFFull Text
Date of Patent:
Sep. 26, 2017

Filed:

Apr. 01, 2014

Organic phosphor-functionalized nanoparticles and compositions comprising the same

Applicants:

Rensselaer Polytechnic Institute, Troy, NY (US);

University of South Carolina, Columbia, SC (US);

Inventors:

Ying Li, Troy, NY (US);

Peng Tao, Midland, MI (US);

Linda S. Schadler, Niskayuna, NY (US);

Robert F. Karlicek, Jr., Mechanicville, NY (US);

Richard W. Siegel, Menands, NY (US);

Lei Wang, Columbia, SC (US);

Brian C. Benicewicz, Columbia, SC (US);

Assignee:

Rensselaer Polytechnic Institute, Troy, NY (US);

Attorney:

Heslin Rothenberg Farley & Mesit

Primary Examiner:

Carol M Koslow

Int. Cl.
CPC ...
C08G 79/02 (2016.01); H01L 33/50 (2010.01); C07F 7/10 (2006.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); H01L 33/56 (2010.01); B82Y 30/00 (2011.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); B82Y 30/00 (2013.01); C07F 7/10 (2013.01); C08G 79/02 (2013.01); C09K 11/02 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H01L 33/56 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1048 (2013.01);
Abstract

Provided is a phosphor-functionalized nanoparticle that includes an inorganic nanoparticle core; surface polymer brushes that include a plurality of long-chain polymers bonded to the surface of the inorganic nanoparticle core, said long-chain polymers each having molecular weight greater than 500, and a plurality of short-chain polymers bonded to the surface of the inorganic nanoparticle core, said short-chain polymers each having molecular weight less than 0.5 times the average molecular weight of the long-chain polymers; and one or more organic phosphors bonded to at least one of the inorganic nanoparticle core and one or more of the plurality of short-chain polymers. Graft density of the short-chain polymers on the surface of the inorganic nanoparticle core (σ) is greater than graft density of the long-chain polymers on the surface of the inorganic nanoparticle core (σ). Also provided are polymer matrices, LED's, optical systems, lighting devices, and fixtures that include the inventive nanoparticle.

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