| dc.contributor.author | Wood, Tabitha Eden Helene. | en_US |
| dc.date.accessioned | 2014-10-21T12:33:36Z | |
| dc.date.available | 2007 | |
| dc.date.issued | 2007 | en_US |
| dc.identifier.other | AAINR27203 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10222/54911 | |
| dc.description | Dipyrromethenes are a fascinating class of heterocyclic compounds. They were first brought to the forefront of chemistry research by Hans Fischer who employed them in his famous syntheses of porphyrins. Recently dipyrromethene research has undergone a renaissance and returned to the attention of academia and industry. | en_US |
| dc.description | Following a brief overview of the history of dipyrromethene chemistry in the literature, this thesis includes accounts of the research into three aspects of dipyrromethene chemistry: their use as ligands in the synthesis of chiral helicates, their use as gemini metal losurfactants; and a survey of their 15N NMR chemical shifts. Bis(dipyrromethene)s appended with homochiral point-chiral auxiliaries have been shown to form zinc(II) helicates with low diastereomeric excesses. Despite the disappointing stereoselectivity for the formation of these compounds, insight into their high structural integrity and studies of their circular dichroism spectra have proven interesting. Preliminary research into the development of a series of gemini metal losurfactants incorporating amphiphilic dipyrromethenes has led to the development of some promising compounds. The zinc(II) complex of a sodium sulfonate-appended dipyrromethene has displayed surfactant activity. Furthermore, using 15N-1H heteronuclear single quantum coherence (HSQC) NMR experiments, a survey of the 15N NMR chemical shifts of dipyrromethenes and some related compounds has revealed a high regularity that can be used as a diagnostic indication of gross structure. | en_US |
| dc.description | Thesis (Ph.D.)--Dalhousie University (Canada), 2007. | en_US |
| dc.language | eng | en_US |
| dc.publisher | Dalhousie University | en_US |
| dc.publisher | | en_US |
| dc.subject | Chemistry, Organic. | en_US |
| dc.title | Some aspects of dipyrromethene chemistry. | en_US |
| dc.type | text | en_US |
| dc.contributor.degree | Ph.D. | en_US |
