Excited State Electronic and Structural Ultrafast Dynamics in -Conjugated Chromophores and Supra...

University of East Anglia
September 05 2017
Position Type
Full Time
Organization Type

The Heisler group research interests are in the application of cutting-edge ultrafast spectroscopy techniques that allow characterization of dynamical processes in complex molecular systems and advanced materials.

The aim of the PhD project is to understand the fundamental aspects of energy and electron transfer mechanisms and timescales in synthetic p-conjugated nanoscale molecular structures.

Molecular structures based on p-conjugated chromophores present attractive features such as semiconducting character and intense nonlinear optical properties. Various applications rely on such features as, for example, electroluminescent devices, solar cells, optical switches, and fluorescent biosensors. The key physical and chemical processes occurring in p-conjugated chromophores happen in the excited state. But excited states tend to be short lived and therefore the need to apply time resolved spectroscopy methods to infer detailed information about photophysical and photochemical processes. Furthermore given the high energy content in visible electronic excitation, structural motions can significantly affect the dynamics in p-conjugated chromophores and a better understanding of how such motions couple to electronic transitions is urgently necessary.

To access this information we will rely on the recently developed state-of-the-art femtosecond stimulated Raman spectroscopy (FSRS) method which consists of a vibrational spectroscopy measurement performed in the excited of molecules. Being a vibrationally sensitive method, it can provide detailed information about structural changes that molecules undergo in the excited state. Further detailed excited state information can be achieved by performing time resolved fluorescence measurements. Our setup at UEA has one of the highest time resolutions ever achieved world-wide. These are cutting edge techniques and should provide a wealth of new information about the excited state dynamics in newly designed p-conjugated molecular chromophores. The proposed PhD studentship will provide a means for the student to become acquainted with state-of-the-art nonlinear spectroscopy techniques and their underlying principles and apply them to new materials.

Funding notes:

This PhD project is offered on a self-funding basis. It is open to applicants with funding or those applying to funding sources. Details of tuition fees can be found at http://www.uea.ac.uk/study/postgraduate/research-degrees/fees-and-funding.

A bench fee is also payable on top of the tuition fee to cover specialist equipment or laboratory costs required for the research. The amount charged annually will vary considerably depending on the nature of the project and applicants should contact the primary supervisor for further information about the fee associated with the project.

This job comes from a partnership with Science Magazine and Euraxess