Synthesis, Characterisation and Applications of Novel Ionic Liquids.

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dc.contributor.advisorNicholson, Brian K.en_NZ
dc.contributor.authorYing, Lucia (Li)
dc.date.accessioned2016-03-15T01:32:12Z
dc.date.available2016-03-15T01:34:21Z
dc.date.issued2006
dc.description.abstractA series of novel phosphinate-based ionic liquids have been synthesised using various organic phosphorus acids, such as mono-n-octylphosphinic acid (octylPO₂H₂), mono-n-hexylphosphinic acid (hexylPO₂H₂), di-n-octylphosphinic acid ((octyl)₂PO₂H), di-n-hexylphosphinic acid ((hexyl)₂PO₂H) and bis(2,4,4-trimethylpentyl)phosphinic acid ((TMP)₂PO₂H), by reaction with tetrabutylphosphonium hydroxide (Bu₄POH), tetrabutylammonium hydroxide (Bu₄NOH), pyridine (py) and triethylamine (Et₃N). Reactions simply involve neutralizing the organophosphorus acids with bases. The only byproduct, water, and excess amine, py/Et₃N can be easily removed under vacuum (Chapter 2). Some of the physical and chemical properties of these ionic liquids have been characterized by NMR, ES-MS, TGA, UV-Visible spectroscopy etc. The formed tetraalkylphosphonium/tetraalkylammonium phosphinate ionic liquids are viscous, hygroscopic liquids, but are more thermally stable than trialkylammonium and pyridinium analogues. For example, for the most stable ionic liquid, [Bu₄P][(octyl)₂PO₂], its onset temperature of decomposition in thermal gravimetric analysis (TGA) is 358 °C (Chapter 2). One of the applications of these novel phosphinate-based ionic liquids has been investigated. Au(0), Rh(0) and Ir(0) nanoparticles have been prepared in some of these phosphinate-based ionic liquids as a media and (or) reducing agents and have been characterized by SEM, TEM, Zetasizer, UV-Visible spectroscopy and IR spectroscopy. In general, the average particles size of Au(0), and Ir(0) were ca. 25 nm, but some of the particles average size formed was less than 2 nm, such as Rh(0) and Ir(0) nanoparticles formed in [Bu₄P][(octyl)₂PO₂] or [Bu₄P][(TMP)₂PO₂]. Generally, these phosphinate-based ionic liquids are good media to prevent nanoparticle aggregation (Chapter 3).en_NZ
dc.format.mimetypeapplication/pdf
dc.identifier.citationYing, L. (Li). (2006). Synthesis, Characterisation and Applications of Novel Ionic Liquids. (Thesis, Master of Philosophy (MPhil)). The University of Waikato, Hamilton, New Zealand. Retrieved from https://hdl.handle.net/10289/9987en
dc.identifier.urihttps://hdl.handle.net/10289/9987
dc.languageenen_NZ
dc.language.isoen
dc.publisherThe University of Waikatoen_NZ
dc.rightsAll items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.en_NZ
dc.subjectphosphinate ionic liquidsen_NZ
dc.subjectsynthesisen_NZ
dc.subjectapplicationen_NZ
dc.titleSynthesis, Characterisation and Applications of Novel Ionic Liquids.en_NZ
dc.typeThesisen_NZ
pubs.place-of-publicationHamilton, New Zealanden_NZ
thesis.degree.disciplineChemistryen_NZ
thesis.degree.grantorUniversity of Waikatoen_NZ
thesis.degree.levelMastersen_NZ
thesis.degree.nameMaster of Philosophy (MPhil)en_NZ
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