CHED 60 |
| Water-soluble quantum dot - organic dye nanocomposites have been prepared via electrostatic interaction. We used CdTe quantum dots with variable diameters. The photophysical properties of the nanocomposites have been investigated. The fluorescence of the parent CdTe quantum dot is largely suppressed. Instead, indirect excitation of the TSPP moiety leads to production of singlet oxygen. The nanocomposites are sufficiently photostable for biological applications. Photophysical properties of the nanocomposites have been studied as a function of QDs diameter. Such nanocomposites may be used as model systems for in vivo imaging and photodynamic therapy. |
|
NSF Partnership for Research and Education in Materials
1:30 PM-4:40 PM, Sunday, 10 September 2006 San Francisco Marriott -- Salon 11, Oral
Division of Chemical Education |