Date of Graduation
Eberly College of Arts and Sciences
Polymers doped with organic photoconductors play an important role in the xerography process. The macroscopic distribution of the doped polymers has been assumed to follow a uniform distribution model as a result of the lack of information regarding the spatial relationships or macroscale organization of the dopant molecules. Because of the amorphous nature of the blend, characterization of the dopant molecule organization is unattainable by the traditional method of x-ray diffraction. Solid-state NMR experiments begun by Hewitt et al. have been expanded using two modern solid-state NMR techniques: Rotational Echo, Double Resonance (REDOR) and Rotational Echo, Adiabatic Passage Double Resonance (REAPDOR). These techniques, coupled with isotope labeling syntheses, provide data that suggests a high degree of macrosopic organization in the dopant molecules and a model for the organization is proposed.
Kesling, Brian D., "Synthesis and characterization of molecularly doped tri-p-tolylamine/polycarbonate blends using solid-state NMR" (2004). Graduate Theses, Dissertations, and Problem Reports. 2116.