Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix
Dissertation (MSc (Chemistry))--University of Pretoria, 2008.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Published: |
University of Pretoria
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613466625310720 |
|---|---|
| access_status_str | Open Access |
| author2 | De Waal, Danita |
| author_browse | De Waal, Danita |
| author_facet | De Waal, Danita |
| collection | Thesis |
| dc_rights_str_mv | © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Chemistry))--University of Pretoria, 2008. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/25859 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:36:35.732Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/25859 A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix De Waal, Danita upetd@up.ac.za Barnard, Werner Molluscan shells Polyacetylenic molecules UCTD Dissertation (MSc (Chemistry))--University of Pretoria, 2008. Molluscan shells show great diversity in colour, which is due to many different classes of chemical compounds. The identification of the pigments found in the molluscan shells of a diverse group of marine species was done in situ using Resonance Raman spectroscopy, and found to be unsubstituted polyacetylenes. Two South African species (D. serra and J. janthina) were chosen for extraction of the pigment-containing organic component, and it was found that the vibrational bands in the Raman spectra of the extracted component shifted relative to that obtained in the molluscan matrix, indicating structural changes in the pigmentary molecules upon extraction. Published correlations were used to evaluate the possible length of the conjugated chain, and a new correlation was established using previous reported data. The conjugated chain length predicted from the new correlation of the studied pigmentary molecules ranges between ten and twelve double bonds. Copyright 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. Please cite as follows: Barnard, W 2006, A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-06262008-114600 / > E216/ag Chemistry unrestricted 2013-09-07T01:03:19Z 2008-07-15 2013-09-07T01:03:19Z 2006-04-24 2008-07-15 2008-06-26 Dissertation Barnard, W 2006, A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/25859 > http://hdl.handle.net/2263/25859 http://upetd.up.ac.za/thesis/available/etd-06262008-114600/ © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Molluscan shells Polyacetylenic molecules UCTD A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| title | A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| title_full | A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| title_fullStr | A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| title_full_unstemmed | A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| title_short | A spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| title_sort | spectroscopic investigation of polyacetylenic molecules in the molluskan biogenic matrix |
| topic | Molluscan shells Polyacetylenic molecules UCTD |
| url | http://hdl.handle.net/2263/25859 http://upetd.up.ac.za/thesis/available/etd-06262008-114600/ |