[CCoE Notice] UH ChBE SABIC Seminar this Friday, Sept 14: Nanoparticles as Meta-Atoms: Programmable Matter at the Nanoscale

[Grayson, Audrey A]

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[Nanoparticles as Meta-Atoms: Programmable Matter  at the Nanoscale]

[Matthew Jones, Ph.D. Assistant Professor of Chemistry Rice University  Friday, September 14, 2018, 10:30 am Room L2, Building D2]

[The a priori design of inorganic solid state materials is often limited by the compatibility of different atomic precursors and a lack of generalized rules for crystallization. An intriguing way to circumvent these challenges is to imagine nanoparticles as 'meta-atoms', where the composition of the core dictates material properties and the surface ligands control bonding and structure formation. However, because most syntheses produce nanoparticles that are spherical, assembled materials are often limited to densely-packed, high-symmetry arrangements. Atomic systems, on the other hand, make use of directional bonds and the principle of valency to create low-symmetry molecules and crystals of impressive sophistication. In this talk, I will introduce the concept of nanoparticle shape anisotropy as a means to mimic the highly-directional interactions found in atoms and molecules. In particular, I will show that when functionalized with duplexed DNA strands, the flat facets of anisotropic particles act to bundle and orient molecules in well-defined surface-normal orientations. Thus, the symmetry and valency of the building block can be controlled by the shape and surface faceting of the underlying nanoparticle.       Matt Jones is the Norman and Gene Hackerman Junior Chair in Chemistry at Rice University. His research program uses nanoparticle building blocks to understand the complex interplay of forces across different length scales that drive ordering processes in self-assembled systems. In his graduate studies, Matt was an NSF fellow under the guidance of Chad Mirkin at Northwestern University and was the first to show that the modification of nanoparticles with DNA could be used to drive their assembly into novel superlattice architectures using complementary base-pair hybridization interactions. For his postdoctoral work, Matt was awarded an Arnold and Mabel Beckman Fellowship to study under Paul Alivisatos at UC Berkeley where he developed liquid-phase transmission electron microscopy techniques that were used to establish new reactions mechanisms in nanoparticle syntheses.]

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Thank you,

Nicolette Solano

Administrative Assistant to M.D. Anderson Professor and Chair Michael Harold

University of Houston

Dept of Chemical and Biomolecular Engineering

Engineering Building 1, room S222

(713) 743-4304


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