About the Project
The project aim will be to unveil phonon effects in organic co-crystals by applying a range of vibrational spectroscopic techniques including terahertz (THz), infrared, Raman and inelastic neutron and X-ray scattering as well as new, emerging nanoscale vibrational spectroscopy using electron energy loss spectroscopy (feasible at only a few facilities worldwide) in tandem with ab initio calculations using density functional theory (DFT) for precise interpretation of experimental spectroscopy. The student will use solution-growth or liquid assisted grinding techniques to prepare co-crystals of organic semiconductors, using work on co-crystals of stilbene/benzene derivatives or perylene/ tetracyanoquinodimethane as starting points. Electron microscopy and electron and X-ray diffraction will be used to characterise the crystalline structures and to also examine evidence of phonon dynamics within the diffuse scattering. Together, these advanced techniques will explore phonon contributions to charge transport and the physical chemistry of co-crystals exhibiting strong electron-phonon coupling.
The student will join trips to SuperSTEM, the EPSRC National Facility for Advanced Electron Microscopy (Cheshire, UK) and to other national facilities (e.g. Diamond Light Source, Oxfordshire, UK) in addition to facilities in the Leeds Electron Microscopy and Spectroscopy Centre, including cryo-microscopy. The project will be embedded within a multidisciplinary environment across the School of Chemistry, the School of Chemical and Process Engineering, and the Bragg Centre for Materials Research. Computational developments will take advantage of the Leeds advanced research computing facilities.
This opportunity is open to all applicants, with a small number of awards for Non-UK applicants limited by UKRI to 1. All candidates will be placed into the EPSRC Bragg Centre Doctoral Training Partnership Studentship Competition and selection is based on academic merit.
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