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Title: Tertiary-phosphine gold(I) and copper(I) complexes : precursors for metal deposition
Author: Coventry, David N.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2002
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Tertiary-phosphine stabilised gold and copper complexes have been prepared with the intention to deposit elemental metal from solution. These complexes were intended to be delivered as a component of an ink on to a suitable substrate by an ink-jet printing process. Testing the compatibility of these complexes with ink-jet technology has been undertaken by Avecia and Seiko-Epson (this project's industrial sponsors). Four methyl(tertiary-phosphine)gold(I) complexes with a general molecular formula, [R3PAuCH3] (R = Ph, Ph-p-F, Ph-p-OMe and Me) were prepared by reacting (tertiary-phosphine)gold(I) chloride with methyllithium. Toluene-d8 and decalin solutions of these complexes were heated to 100°C and the rate of decomposition of each complex to gold(O), tertiary-phosphine and ethane was measured spectroscopically by NMR and GC respectively. Relatively the gold(I) complexes were found to decompose in the following order: Ph-p-F > Ph > Me >> Ph-p-OMe A series of tertiary-phosphine stabilised copper(I) aryloxide complexes, with the general molecular formula [{(RO)Cu(PR'3)m}n], were synthesised with the intent to duplicate the results obtained for the gold(I) complexes with a copper system. All the copper(I) complexes prepared were found to be too thermally stable to be suitable for the aim of the project. During the course of this project it was noted that the steric and electronic factors involved in producing the thermodynamic product from the reaction mixture were of major importance in the design of such complexes. Increase in overall steric bulk was, as expected, found to lead to copper(I) ions with lower coordination numbers while an increase in the electron affinity of the ligands was found to produce complexes with copper ions with higher coordination numbers.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available