Physical Sciences and Mathematics Commons^™

Synthesis And Characterization Of Polymer Grafted Nanoparticles, Eric Gerald Ruzicka

Theses and Dissertations

This dissertation focuses on the design, synthesis, and characterization of well controlled interfaces on nanoparticle surfaces. Reversible addition-fragmentation chain transfer (RAFT) polymerization was used to synthesize block copolymers and polymer grafted silica nanoparticles (PGNs) with precise control over molecular weight, graft density, and architectures.

In the first chapter, polymer molecular weights were determined through diffusion ordered spectroscopy NMR (DOSY NMR) as an alternative to size exclusion chromatography (SEC). Polymer standards of known molecular weight were analyzed through DOSY to obtain their respective diffusion coefficients. A calibration curve was generated correlating diffusion coefficients with polymer molecular weights. The reliability of the …

Synthesis, Structural Variations And Trends In The Properties Of Unique Dinuclear And Polynuclear Complexes Of Bis(Pyrazolyl)Methane Ligands In Solid State And Solution, Andrea Eva Pascui

Theses and Dissertations

The semi-rigid ligands, p-[CH(pz)₂]₂C₆H₄, L_p, m-[CH(pz)₂]₂C₆H₂, L_m, and m-[CH(3,5-Me₂pz)₂]₂C₆H₄, L_m* (pz = pyrazolyl ring), link two bis(pyrazolyl)methane units into a single molecule by a rigid phenylene spacer and are used to study the structural variations and magnetic interactions in self-assembled first row, divalent transition metal complexes in polymeric, dinuclear and dinuclear metallacyclic settings. The formation of these architectures highly depend on the geometry of these ligands: anti, the …