<p>G1 and G2 dendrimeric salicylaldimine ligands containing both substituted and unsubstituted aryl rings were synthesized via a Schiff base condensation of the appropriate salicylaldehyde and the peripheral amino groups of the corresponding G1 and G2 polypropyleneimine dendrimers. The new ligands were characterized using FTIR, 1H NMR and 13C NMR spectroscopy, elemental analysis and ESI mass spectrometry. The dendrimeric ligands were converted to multinuclear nickel complexes by reaction with nickelacetate. The metal complexes were characterized by FTIR spectroscopy, elemental analysis and ESI mass spectrometry.</p> <p>Some of the dendritic complexes were evaluated as catalyst precursors in the oligomerization of &alpha / -olefins such as ethylene and 1-pentene, using aluminium alkyls such as EtAlCl2 and modified methylaluminoxane (MMAO) as activators. All the dendrimeric catalysts evaluated are active in the oligomerization reactions. From the oligomerization results it was observed that there is a clear dendritic effect, in that both catalyst activity as well as selectivity are impacted by the dendrimer generation. In most cases it was observed that the second generation complexes show higher activity than the corresponding first generation complexes.</p> <p>The dendrimeric complexes were also evaluated as catalyst precursors in the vinyl polymerization of norbornene. In this case methylaluminoxane (MAO) were employed as an activator. Once again it was noted that a dendritic effect is operative, with second generation metallodendrimers having a higher activity than the first generation complexes.</p>

D.Sc. / Please view full text to see abstract

by Wing-kwong Ip. / Bibliography: leaf 105 / Thesis (M.Phil.)--Chinese University of Hong Kong, 1983

"December 2003" / Bibliography: leaves 229-240. / x, 240 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, Discipline of Chemistry, 2004

"July 2004" / Includes copies of publications by the author as appendix. / Includes bibliographical references. / ix, 181, [26] leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Describes the construction and characterisation of a variety of supramolecular architectures based on cyclodextrins. / Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, Discipline of Chemistry, 2005?

Thesis (M. Sc.)--York University, 1998. Graduate Programme in Chemistry. / Typescript. Includes bibliographical references (leaves 158-169). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL:http://wwwlib.umi.com/cr/yorku/fullcit?pMQ27385.

Thesis--Ph. D., University of Hong Kong, 1982.

Thesis (M. Sc.)--University of Hong Kong, 1970. / Mimeographed.

Thesis (Ph. D.)--University of Hong Kong, 2002. / Includes bibliographical references.

published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy