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Effect Of Charged Species On The Gradient Properties, Kayesh Ashraf
Effect Of Charged Species On The Gradient Properties, Kayesh Ashraf
Theses and Dissertations
Surface chemical gradients are materials that exhibit continuous, gradually varying chemical or physical properties along and across the length of a substrate. As a result, each point on the gradient surface can represent an individual sample. They are broadly classified as chemical and physical gradients depending upon the properties that the gradient exhibits. A physical gradient involves a continuous variation of physical properties such as surface roughness and film porosity on the micrometer scale. Chemical gradients involve a gradual variation of chemical properties such as polarity, acidity and basicity, etc. Such gradients have found various applications in cell adhesion, nanoparticle …
Fundamental And Applied Studies Of Metal Ion Extraction By Crown Ethers Into Imidazolium-Based Room Temperature Ionic Liquids, Cory Hawkins
Fundamental And Applied Studies Of Metal Ion Extraction By Crown Ethers Into Imidazolium-Based Room Temperature Ionic Liquids, Cory Hawkins
Theses and Dissertations
Growing recognition of the extraordinary physicochemical properties and unique solvation environment afforded by ionic liquids (ILs) has drawn increasing attention to these solvents as media for chemical separations. Until recently, little was known about how ionic liquids behave as solvents in this application, particularly in the extraction of ionic solutes such as metal ions. In contrast to the single pathway observed using molecular diluents (i.e., neutral complex extraction), metal ion extraction in these systems has been shown to proceed through as many as three competing pathways over a wide range of conditions. Despite this added complexity, the favorable physicochemical characteristics …