Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2006. / Inclusion and porosity properties of the following supramolecular solid-state hosts
were investigated:
• 2,7-dimethylocta-3,5-diyne-2,7-diol
• 2-methyl-6-phenylhexa-3,5-diyn-2-ol
• Dianin’s compound
• p-tert-butyl-calix[4]arene
• 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetramethoxy-2,8,14,20-
tetrathiacalix[4]arene
• Two discrete coordination metallocycles, [Ag2IMID2](BF4)2 and
[Cu2(BITMB)2(Cl)4]
All of these compounds form well-defined crystalline host structures. Inclusion
phenomena involving encapsulation of liquids were studied using single-crystal x-ray
diffraction methods. Several guest-free host structures (α phases) were structurally
elucidated and their gas sorption properties were investigated.
Studies of the sorption properties of seemingly nonporous materials were carried
out to provide insight into this rare phenomenon. Water and iodine sorption by a
polymorph of 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetramethoxy-2,8,14,20-
tetrathiacalix[4]arene shows that the conventional perception of sorption through the
solid-state requires reassessment.
Gas sorption studies were carried out using apparatus devised and presented
here. These include sorption apparatus and a device to determine single-crystal
structures under controlled gas atmospheres.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/2058 |
| Date | 12 1900 |
| Creators | Lloyd, Gareth Owen |
| Contributors | Barbour, L. J., University of Stellenbosch. Faculty of Science. Dept. of Chemistry and Polymer Science. |
| Publisher | Stellenbosch : University of Stellenbosch |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | University of Stellenbosch |
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