Details of Grant 

EPSRC Reference:	GR/S01641/01
Title:	Dynamical Studies of Excitation Transfer and Aggregation: Guest-Host Systems and Site-Selective Spectroscopy
Principal Investigator:	Phillips, Professor RT
Other Investigators:	Herz, Professor LM
Researcher Co-Investigators:
Project Partners:
Department:	Physics
Organisation:	University of Cambridge
Scheme:	Standard Research (Pre-FEC)
Starts:	01 October 2003	Ends:	30 September 2006	Value (£):	193,172
EPSRC Research Topic Classifications:	Materials Characterisation
EPSRC Industrial Sector Classifications:	Electronics
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Panel History:
Summary on Grant Application Form
Firstly, we wish to provide a detailed description of the hopping transfer of excitations from non-interacting polymer chains to chain aggregates in thin films of specific conjugated polymers. In particular, we will investigate how this transfer is affected by the film temperature, the positional and energetic disorder in the system and the initial energy of the excitations. Through appropriate theoretical modelling of our results we aim to arrive at suggestions and recipes for suppression of the migration of excitations from bulk states to aggregate states. Secondly, we intend to extend our investigations into chain aggregation in systems consisting of dye guest molecules bonded covalently to polymeric hosts. We will focus on a range of novel polymers which have dye guests covalently attached to different parts of the polymeric host chain, namely at the chain ends, as a sidechain or within some of the monomers. We will examine how the extent to which the polymer chains aggregate is influenced by the positioning of the relatively bulky dye guest molecules within the polymer chains. We will establish how the host-to-guest transfer efficiency is affected by the positioning of the dye molecules along the polymer chain. Consequently, we aim to provide an insight into how best to construct such systems to optimise the guest-host transfer efficiency while at the same time maintaining a low density of polymeric host aggregates.
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Organisation Website:	http://www.cam.ac.uk