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Liquid-liquid interfacial nanoparticle assemblies

United States Patent

December 30, 2008
View the Complete Patent at the US Patent & Trademark Office
Self-assembly of nanoparticles at the interface between two fluids, and methods to control such self-assembly process, e.g., the surface density of particles assembling at the interface; to utilize the assembled nanoparticles and their ligands in fabrication of capsules, where the elastic properties of the capsules can be varied from soft to tough; to develop capsules with well-defined porosities for ultimate use as delivery systems; and to develop chemistries whereby multiple ligands or ligands with multiple functionalities can be attached to the nanoparticles to promote the interfacial segregation and assembly of the nanoparticles. Certain embodiments use cadmium selenide (CdSe) nanoparticles, since the photoluminescence of the particles provides a convenient means by which the spatial location and organization of the particles can be probed. However, the systems and methodologies presented here are general and can, with suitable modification of the chemistries, be adapted to any type of nanoparticle.
Emrick; Todd S. (South Deerfield, MA), Russell; Thomas P. (Amherst, MA), Dinsmore; Anthony (Amherst, MA), Skaff; Habib (Amherst, MA), Lin; Yao (Amherst, MA)
University of Massachusetts (Amherst, MA)
10/ 753,868
January 8, 2004
The United States government has certain rights to this invention pursuant to grant no. DEFG96ER45612 from the Department of Energy to the University of Massachusetts.