Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"pH- switchable"”.
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A pH Switchable Responsive Surface for the Trapping And Release of a Hydrophobic Substance
<p>Solid phase extraction is one of the most widely used techniques to trap and release compounds in a solution. A hydrophobic substance will stick efficiently to a hydrophobic surface (the “like dissolves like” principle). With an introduced response (i.e. pH change), a responsive surface can …
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Novel Switchable Stationary Phase Methods For Supercritical Fluid Chromatography
… of this thesis, a supercritical fluid chromatography-flame ionization detection (SFC-FID) system employing a modified water stationary phase was investigated for the analysis of organic bases. The method uses a stainless steel capillary column coated with water containing NH4OH, which was also …
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Spectroscopic Studies on the Interaction of Cetylpyridinium Bromide Monohydrate and Bromothymol Blue with Polymerized Silica
… chemical transport system could greatly advance switchable chemical reactions and be applicable for targeted drug delivery, intelligent inks, and nanotechnology. To better understand the mechanisms of function for a switchable macromolecular transport system, preliminary work has been completed …
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Computer-Guided Design of Photocatalyst for PET-RAFT Polymerisation
Photo-controlled polymerisation uses a photo-excited photocatalyst (PC) to reversibly and deactivate the propagating species. Under regulation by light, photo-controlled polymerisation features temporal control, spatial control, sequence control and high level of selectivity/orthogonality between …
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Towards Responsive Squaramides: Anion Recognition, Sensing, and Transport
… the receptors were found not to display anionophoric activity at pH 7.20, but at pH 4.20, anion transport was observed to ‘switch on’. This established amido-squaramides as pH-switchable anion transport units. The 3rd Chapter details attempts to synthesise tertiary squaramides, featuring …