Ultrafast spectroscopy of ultraviolet radiation filter molecules

The successful applicant will study how organic-based ultraviolet radiation (UVR) filter molecules found in everyday life (e.g. sunscreen lotions) absorb UVR and convert this potentially toxic electronic excitation energy into non-toxic vibrational motion (or heat). Using femtosecond pump-probe spectroscopy, the electronically excited state dynamics of these UVR filters will be probed in real time following irradiation with UVA and UVB (400-280 nm). A range of pump-probe spectroscopic techniques will be utilised, including within the recently established, world class Warwick Centre for Ultrafast Spectroscopy (WCUS) laser facility. This PhD studentship has two central aims: (i) To apply gas- and solution-phase pump-probe spectroscopy to understand photoprotection in natural and artificial UVR filter molecules, and (ii) to develop new instrumentation for studying excited state photochemistry and consequent dynamics in condensed-phase systems. The knowledge gained from these studies may assist in developing next generation UVR filters that are more robust to photodamage. A representative reference from the group’s work is: Phys. Chem. Chem. Phys., 2016, 18, 28140-28149.

Further information about the Stavros group and WCUS can be found at: go.warwick.ac.uk/teamstavros and go.warwick.ac.uk/wcus.

PLEASE NOTE: Although applications are accepted all year round – once a suitable candidate is offered the position the position will close and will no longer be available.