Direct Surface Attachment Methods for the Preparation of Light Emitting Quantum Dot Nanoparticle Poly(phenylene vinylene) Composite Materials
The composite materials prepared in this unique approach allow the properties of quantum dots (CdSe nanocrystals) to be exploited in electronic polymer materials, using only a very low loading of quantum dots relative to conventional approaches.
The effective dispersion of quantum dots within electronically active polymers, such as poly(para-phenylene), results in extensive interfacial contact between the quantum dots and polymer. This generates an efficient energy transfer between the two components that cannot be achieved in conventional blends, where quantum dot aggregation prevents such efficient transfer.
Key to this invention is the strategic use of organic functionality in both the nanoparticle growth step and the subsequent polymerizations that provide the composite materials.
Fabrication of light-emitting devices such as light-emitting diodes, solar cells, photon counters, sensor materials, materials for flat panel displays.
There are significant cost advantages, as well as environmental benefits, associated with the use of lower weight percentages of quantum dots in the composite materials.
US Patent 7,589,240 issued
Commercial Ventures and Intellectual Property