PHYS 12 |
| The size dependent properties of excitons and multiexcitons in quantum dots, coupled with a material that can be processed from solution, has led to potential applications in fields that include emissive displays, solar energy conversion, and biological and biomedical fluorescence imaging. A fundamental understanding of exciton processes is critical for any of these applications to become realized. Synthesis of well characterized materials is obviously key, not only of the functional inorganic particle itself, but also the ligand shell that protects it and couples it chemically to molecules and matrices of interest. This talk will first discuss optical properties of quantum dots, using single molecule fluorescence techniques, as well as time resolved ensemble methods to extract fundamental properties relevant to current potential applications. We will then explore the materials challenges of broadly applying quantum dots as light emitters and light absorbers in devices and for biological imaging. We will focus on two practical electro-optic processes and two biological challenges: electrically driven light emission for displays, exciton ionization and carrier extraction for photodection and photovoltaics, fluorescence imaging of live cells at the single receptor level, and the challenges of applying emergent inorganic nanomaterials in vivo. |
|
Nanostructured Materials
8:10 AM-12:00 PM, Sunday, April 6, 2008 Morial Convention Center -- Rm. 338/339, Oral
Division of Physical Chemistry |