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Inclusion compounds of multipedal hosts
The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene (host...
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| Format: | Thesis |
| Language: | English |
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Department of Chemistry
2017
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| _version_ | 1867613774329937920 |
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| access_status_str | Open Access |
| author | Nash, Katherine Lindsay Gifford |
| author2 | Bourne, Susan A |
| author_browse | Bourne, Susan A Nash, Katherine Lindsay Gifford |
| author_facet | Bourne, Susan A Nash, Katherine Lindsay Gifford |
| author_sort | Nash, Katherine Lindsay Gifford |
| collection | Thesis |
| description | The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene (host 3), are characterised by a planar electron-rich central region with bulky substituent groups attached to it. Each substituent contains a hydroxyl group capable of hydrogen bonding. These features enable the inclusion of small organic solvent molecules, with suitable functional groups, within the host framework. The crystal structures of selected inclusion compounds and the a-phases of hosts 1 and 3 are presented. The hydrogen bonding patterns and host-guest interactions are analysed. The packing motif of the host compounds and host conformation within each structure is also discussed. The thermal decomposition behaviour of these compounds was investigated using thermogravimetry and differential scanning calorimetry. The kinetics of desolvation for some of the inclusion compounds was determined using isothermal thermogravimetry. Rate laws describing the desolvation mechanisms are ascribed, and the activation energies determined. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/26237 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:41:29.545Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Department of Chemistry |
| publisherStr | Department of Chemistry |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/26237 Inclusion compounds of multipedal hosts Nash, Katherine Lindsay Gifford Bourne, Susan A Nassimbeni, Luigi R Chemistry The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene (host 3), are characterised by a planar electron-rich central region with bulky substituent groups attached to it. Each substituent contains a hydroxyl group capable of hydrogen bonding. These features enable the inclusion of small organic solvent molecules, with suitable functional groups, within the host framework. The crystal structures of selected inclusion compounds and the a-phases of hosts 1 and 3 are presented. The hydrogen bonding patterns and host-guest interactions are analysed. The packing motif of the host compounds and host conformation within each structure is also discussed. The thermal decomposition behaviour of these compounds was investigated using thermogravimetry and differential scanning calorimetry. The kinetics of desolvation for some of the inclusion compounds was determined using isothermal thermogravimetry. Rate laws describing the desolvation mechanisms are ascribed, and the activation energies determined. 2017-11-14T13:59:55Z 2017-11-14T13:59:55Z 1997 2017-03-28T08:55:48Z Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/26237 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry Nash, Katherine Lindsay Gifford Inclusion compounds of multipedal hosts |
| thesis_degree_str | Doctoral |
| title | Inclusion compounds of multipedal hosts |
| title_full | Inclusion compounds of multipedal hosts |
| title_fullStr | Inclusion compounds of multipedal hosts |
| title_full_unstemmed | Inclusion compounds of multipedal hosts |
| title_short | Inclusion compounds of multipedal hosts |
| title_sort | inclusion compounds of multipedal hosts |
| topic | Chemistry |
| url | http://hdl.handle.net/11427/26237 |
| work_keys_str_mv | AT nashkatherinelindsaygifford inclusioncompoundsofmultipedalhosts |