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Full-Text Articles in Physical Sciences and Mathematics
Sol-Gel Synthesis And Characterisation Of Novel Metal Oxide Nanomaterials For Photocatalytic Applications, Nicholas T. Nolan
Sol-Gel Synthesis And Characterisation Of Novel Metal Oxide Nanomaterials For Photocatalytic Applications, Nicholas T. Nolan
Doctoral
This thesis presents a study of the effect of chemical modifiers and dopants on both the anatase to rutile transformation and also the photocatalytic efficiency of semiconductor nanomaterials. The main focus of the work is based on the crystallisation and phase transformation of the widely investigated semiconductor metal oxide, titanium dioxide (TiO2) Of the three polymorphs associated with titanium dioxide, anatase is widely regarded as the most effective photocatalyst. Typically anatase will transform to rutile in the temperature range 600 – 700 °C however, modification of a titanium precursor with a chelating agent can result in extended transformation temperature. The …
Nanomaterials From Biologically Active Molecules: Self-Assembly And Molecular Recognition, Min Yu
Nanomaterials From Biologically Active Molecules: Self-Assembly And Molecular Recognition, Min Yu
Dissertations
This dissertation describes the development of molecular assemblies and molecular recognition of phospholipids (PLs) that exhibit potential applications in emerging nanotechnologies. It consists of two parts: (1) structural features of PLs responsible for recognition of synthetic copolymers, and (2) design, synthesis and analysis of magnetic nanotubes obtained from PLs with a common theme of colloidal synthesis served as a platform for film formation and nano-assemblies of nanotubes. Poly(methyl methacrylate/n-butyl acrylate) (p-MMA/nBA) colloidal particles that were stabilized by 1,2-dilauroyl-sn-glycero-3-phosphocholine (DLPC) PLs were synthesized, and upon the particle coalescence, PL stratification resulted in the formation of surface localized ionic clusters (SLICs). These …
Applications Of Block Copolymer Films In The Field Of Electrochemical Energy Systems, Jing-Ze Li, Guo-Guang Chen, Di Mei, Wei Zou, Jian-Wen Li, Motonori Komura, Tomokazu Iyoda
Applications Of Block Copolymer Films In The Field Of Electrochemical Energy Systems, Jing-Ze Li, Guo-Guang Chen, Di Mei, Wei Zou, Jian-Wen Li, Motonori Komura, Tomokazu Iyoda
Journal of Electrochemistry
A new series of amphiphilic liquid crystalline block copolymer thin films,having normally aligned and highly ordered nanocylinder array,were functionalized as anisotropic ion conducting materials by selectively infiltration.These ion-active nanocylinders are coaxially aligned and hexagonally arranged in a large area,which might be used as novel types of electrolyte films for electrochemical energy systems such as lithium ion battery,fuel cell,etc.Since the ordered cylinders can carry on and store the ions,the block copolymer films can be utilized as the advanced template to fabricate the ordered array of nanoporous,nanoparticles,and nanowires for the potential application in lithium ion battery as three dimensional electrode materials.
Mesoporous Silica Microparticles Enhance The Cytotoxicity Of Anticancer Platinum Drugs, Zhimin Tao, Bonnie Toms, Jerry Goodisman, Tewodros Asefa
Mesoporous Silica Microparticles Enhance The Cytotoxicity Of Anticancer Platinum Drugs, Zhimin Tao, Bonnie Toms, Jerry Goodisman, Tewodros Asefa
Chemistry - All Scholarship
We report on the endocytosis and the time-dependent enhanced cytotoxicity of anticancer platinum drugs when the drugs are combined with (or loaded into) one of the two most common types of mesoporous silica materials, MCM-41 or SBA-15. The anticancer drug cisplatin and its isomer transplatin, when loaded on MCM-41 and SBA-15 microparticles, were less cytotoxic to leukemia cells than the drugs alone after 12 h exposure. However, the drug-loaded microparticles exhibited unprecedented enhanced cytotoxicity to the cancerous cells after 24 h of exposure. This cytotoxicity of the drug-loaded microparticles was even higher than of the pure drugs in solutions, suggesting …