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Cyclopalladated metallomesogens
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Lydon, Donocadh P. (1999) Cyclopalladated metallomesogens. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk/record=b1370151~S1
Abstract
This thesis describes the synthesis and characterisation of novel cyclopalladated
metallomesogens from four principal N-functionalised mesogenic ligands:(i) 4-alkyloxy-N-
(4' -alkyloxybiphenyl)benzylidene, (H) terephthalylidene-bis-4-N-4' -alkyloxybenzylidene,
(iii) bis( 4-alkoxybenzylidene-l ,4-phenylenediamine and (iv) 3, 6 bis-
(alkyloxyphenyl)pyridazine).
The ligands have been studied to determine their liquid crystalline behaviour and the phase
behaviour is reported for the terephthalylidene-bis-4-N-4' -alkyloxybenzylidene series and for
the 3, 6 bis-(alkyloxyphenyl)pyridazine series since no comprehensive study of either system
has been reported in the literature.
The co-ordination chemistry of these ligands is reported. The regiospecificity of the
cyclopalladation reaction for the terephthalylidene-bis-4-N-4' -alkyloxybenzylidene and 3, 6
bis(alkyloxyphenyl)pyridazine series has been established and the influence of the primary
cyc1opalladationstep on secondary cyclopalladationhas been examined.
The co-ligands acetylacetonate, undecane-5,7 -dione, pentandecane-7,9-dione, nonadecane-
9,1O-dione, 2,2,6,6 tetra-methyl-heptane-3,5-dione and cyclopentadienylide have been
employed to enable elaboration of the geometry of the organopalladium complexes giving
diversity to the structure and physical properties of these materials.
Item Type: | Thesis (PhD) |
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Subjects: | Q Science > QD Chemistry |
Library of Congress Subject Headings (LCSH): | Metallomesogens, Liquid crystals, Ligands |
Official Date: | April 1999 |
Institution: | University of Warwick |
Theses Department: | Department of Chemistry |
Thesis Type: | PhD |
Publication Status: | Unpublished |
Supervisor(s)/Advisor: | Rourke, Jonathan |
Sponsors: | University of Warwick |
Extent: | xx, 161 leaves |
Language: | eng |
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