|Energy and Charge Transfer Dynamics in Low-Dimensional Colloidal Nanostructures|
: 486 : 2015.06.01 07:55
|일시 : 2015.06.04 17:00|
|소속 : Department of Chemistry, Texas A&M University|
|발표자 : 손동희|
|장소 : K507|
This presentation will discuss several photophysical properties of zero- and two-dimensional colloidal nanostructure focusing on energy and charge transfer processes. First half of the presentation will focus on transition metal-doped quantum dots, whose strong electronic coupling between exciton and d electrons of dopant ions gives rise to interesting optical and magnetic phenomena, such as strong sensitized phosphorescence and generation of hot electrons via upconversion of excitons. Structurally-correlated exciton-dopant energy transfer dynamics and the generation of highly reactive hot electrons in Mn-doped quantum dots will be discussed. The second part of the presentation will discuss the photophysical properties on single and multi-layered colloidal 2D transition metal dichalcogenide nanodiscs. Optical polarization and electrooptic properties reflecting 2D layered materials' highly anisotropic structure and the unique coupled nature of the different degrees of freedom.