Rochford, Luke A. (2013) Structural, electronic and magnetic properties of metal phthalocyanines. PhD thesis, University of Warwick.

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Abstract

Metal phthalocyanines (MPcs) prepared as single crystals, polycrystalline powders and thin films have been analysed using a combination of surface science techniques, diffraction based structural characterisation and magnetic characterisation.

Vanadium oxide phthalocyanine (VOPc) prepared as thin films on the (111) surface of gold, silver and copper is analysed by (STM) low energy electron diffraction (LEED) and ultraviolet photoemission spectroscopy (UPS). Similar surface and electronic structure is observed on gold and silver, but profoundly different assembly and electronic properties were observed on copper.

The effect of increasing the substrate temperature during growth on the structure and morphology of iron phthalocyanine (FePc) and manganese phthalocyanine (MnPc) is investigated using atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). An evaporated copper iodide (CuI) structural template layer is also used to alter the arrangement of FePc molecules in thin films.

The single crystal structure of fluorinated copper phthalocyanine (F16CuPc) is re-determined using synchrotron X-ray diffraction. Thin films of F16CuPc grown on graphene oxide supports are analysed using X-ray diffraction (XRD), transmission electron microscopy (TEM) and selected area electron diffraction (SAED). This allows assignment of both crystal structure and texture in polycrystalline thin films of a variety of thicknesses.

F16CuPc is also analysed using superconducting quantum interference (SQUID) magnetometry in both powder and thin film morphologies. 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) structural template layers are used to alter the orientation of crystallites and the effect of this on the magnetic properties are analysed.

Item Type:	Thesis (PhD)
Subjects:	Q Science > QD Chemistry
Library of Congress Subject Headings (LCSH):	Phthalocyanines -- Structure, Phthalocyanines -- Electric properties, Phthalocyanines -- Magnetic properties, Thin films, Vanadium oxide
Official Date:	September 2013
Dates:	Date Event September 2013 Submitted
Institution:	University of Warwick
Theses Department:	Department of Chemistry
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Jones, T. S. (Tim S.)
Sponsors:	Engineering and Physical Sciences Research Council (EPSRC)
Extent:	x, 192 leaves : illustrations.
Language:	eng

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