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Full-Text Articles in Nanoscience and Nanotechnology

Simulation Studies Of Diblock-Copolymer Grafted Nanoparticle Assembly In Solvent And Polymer Matrix, Carla E. Estridge Jan 2015

Simulation Studies Of Diblock-Copolymer Grafted Nanoparticle Assembly In Solvent And Polymer Matrix, Carla E. Estridge

Chemistry & Biochemistry Graduate Theses & Dissertations (1986-2018)

Macroscopic properties of polymer nanocomposites are fundamentally linked to the morphology (or assembled structure) of its constituents. In order to design composites to have specific macroscopic properties it is important to be able to control the assembly of the constituents in the composite. In this thesis we use molecular simulations to study the molecular-level interactions and assembly of one class of polymer nanocomposites, namely diblock-copolymer grafted nanoparticles in solvent and in polymer matrix.

First, we study how the molecular features of the diblock-copolymer grafts affect the assembly of grafted nanoparticles in a (implicit) small molecule solvent. Using coarse-grained molecular dynamics ...


Charge Transfer Dynamics In Complexes Of Light-Absorbing Cds Nanorods And Redox Catalysts, Molly Bea Wilker Jan 2015

Charge Transfer Dynamics In Complexes Of Light-Absorbing Cds Nanorods And Redox Catalysts, Molly Bea Wilker

Chemistry & Biochemistry Graduate Theses & Dissertations (1986-2018)

The use of photoexcited electrons and holes in semiconductor nanocrystals as reduction and oxidation reagents is an intriguing way of harvesting photon energy to drive chemical reactions. This dissertation describes research efforts to understand the photoexcited charge transfer kinetics in complexes of colloidal CdS nanorods coupled with either a water oxidation or reduction catalyst. The first project focuses on the charge transfer interactions between photoexcited CdS nanorods and a mononuclear water oxidation catalyst derived from the [Ru(bpy)(tpy)Cl]+ parent structure. Upon excitation, hole transfer from CdS oxidizes the catalyst (Ru2+→Ru3+) on a 100 ps – 1 ...


Interactions Of Nanomaterials With Biological Systems: A Study Of Bio-Mineralized Nanoparticles And Nanoparticle Antibiotics, Jennifer Chappell Gifford Jan 2015

Interactions Of Nanomaterials With Biological Systems: A Study Of Bio-Mineralized Nanoparticles And Nanoparticle Antibiotics, Jennifer Chappell Gifford

Chemistry & Biochemistry Graduate Theses & Dissertations (1986-2018)

Nature is continually able to out-perform laboratory syntheses of nanomaterials with control of specific properties under ambient temperatures, pressures and pH. The investigation of existing biomolecule-mediated nanoparticle synthesis provides insight and knowledge necessary for duplicating these processes. In this way, peptides or proteins with nanomaterial mediation capabilities can be: 1) explored to further understand the ways in which biomolecules create specific nanoparticles then 2) used to create genetically encodable tags for use in electron tomography. The goal of designing such a tag was to assist in closing the resolution gap that exists in current imaging techniques between approximately 5 nm ...