公开(公告)号：US09773953B2

公开(公告)日：2017-09-26

申请号：US14781481

申请日：2014-04-01

Applicant: RENSSELAER POLYTECHNIC INSTITUTE ,  UNIVERSITY OF SOUTH CAROLINA

Inventor： Ying Li ,  Peng Tao ,  Linda S. Schadler ,  Robert F. Karlicek, Jr. ,  Richard W. Siegel ,  Lei Wang ,  Brian C. Benicewicz

IPC: C08G79/02 ,  H01L33/50 ,  C07F7/10 ,  C09K11/02 ,  C09K11/06 ,  H01L33/56 ,  B82Y30/00

CPC classification number: H01L33/504 ,  B82Y30/00 ,  C07F7/10 ,  C08G79/02 ,  C09K11/02 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1048 ,  H01L33/56

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 (σSC) is greater than graft density of the long-chain polymers on the surface of the inorganic nanoparticle core (σLC). Also provided are polymer matrices, LED's, optical systems, lighting devices, and fixtures that include the inventive nanoparticle.

公开(公告)号：US20140343233A1

公开(公告)日：2014-11-20

申请号：US14359728

申请日：2012-11-21

Applicant: UNIVERSITY OF SOUTH CAROLINA ,  RENSSELAER POLYTECHNIC INSTITUTE

Inventor： Brian C. Benicewicz ,  Peng Tao ,  Ying Li ,  Linda Schadler Feist ,  Richard W. Siegel ,  Anand Viswanath

IPC: C08L83/04

CPC classification number: C08L83/04 ,  C08G77/30 ,  C08K3/36 ,  C08L83/08

Abstract: Silicone-based nanocomposites that include a plurality of multimodal nanoparticles dispersed within a silicone-based polymeric matrix are provided. Each of the multimodal nanoparticle has a first plurality of long silicone compatible polymeric chains and a second plurality of short silicone compatible polymeric chains grafted onto a surface of a nanoparticle (e.g., an inorganic nanoparticle, such as silica, alumina, titania, indium tin oxide, CdSe, etc.), with the short silicone compatible polymeric chains present on each multimodal nanoparticle at a higher grafting density than the long silicone compatible polymeric chains. Methods are also provided for forming a silicone-based nanocomposite.

Abstract translation: 提供了包含分散在硅氧烷基聚合物基质内的多个多峰纳米颗粒的基于硅氧烷的纳米复合材料。 每个多峰纳米颗粒具有第一多个长硅氧烷相容的聚合物链和接枝到纳米颗粒表面上的第二多个短硅氧烷相容的聚合物链（例如，无机纳米颗粒，例如二氧化硅，氧化铝，二氧化钛，氧化铟锡 ，CdSe等），其中短的硅氧烷相容的聚合物链以比长硅氧烷相容的聚合物链更高的接枝密度存在于每个多峰纳米颗粒上。 还提供了形成硅氧烷基纳米复合材料的方法。