Spin based electronics (spintronics) is one of the most exciting and challenging areas in nanotechnology. It is expected to be of major scientific and social impact. Very little is known of the spin scattering processes in organic materials. At first instance, there are two major spin flip mechanisms that should be considered and this proposal is to investigate one of them, Spin Orbit (SO) interaction, in detail. By substituting the Al in tris-(8-hydroxy-quinoline) aluminium with other heavier Group-III metals, we predict the electron spin relaxation rate will increase via an increased SO interaction. We therefore wish to perform longitudinal field repolarisation measurements of the muoniated radical to extract the electron spin relaxation rate as a function of temperature for the Group-III quinolates, which can be gained from three independent phenomena.