Details of Grant 

EPSRC Reference:	GR/R06823/01
Title:	Insulated Molecular Wires: Luminescent Conjugated Polyrotaxanes
Principal Investigator:	Cacialli, Professor F
Other Investigators:	Friend, Professor Sir R
Researcher Co-Investigators:
Project Partners:	Cambridge Display Technology Ltd (CDT)
Department:	Physics
Organisation:	University of Cambridge
Scheme:	Standard Research (Pre-FEC)
Starts:	01 June 2001	Ends:	31 August 2003	Value (£):	90,496
EPSRC Research Topic Classifications:	Chemical Synthetic Methodology Materials Synthesis & Growth
EPSRC Industrial Sector Classifications:	Electronics
Related Grants:	GR/R06830/01
Panel History:
Summary on Grant Application Form
The class of Cyclodextrin-threaded Polyconjugated Rotaxanes, CD-PCRs, offers an exciting opportunity for studying and controlling solid state and interchain interactions of organic semiconductors with a view to a new generation of Light-Emitting Polymers, LEPs. We can access CD-PCRs via collaboration with HL Anderson, who has invented a general synthetic route. The main advantages that we expect over un-insulated materials are substantial increase of luminescence efficiency and chemical efficiency and chemical stability. Our project focuses first on the basic photophysics (PL efficiency, excited state absorption for investigating Inter-System Crossing of radiative excitons to the triplets manifold and occurrence/lack of charge generation via exciton splitting). This will allow us to establish nature and extent of solid state interactions, by comparison with unthreaded materials.Then we will use CD-PCRs as active layers of LEDs (or in some cases LECs), either as neat films or in blends with relative high charge mobility hosts. These blends aim at achieving low field charge transport in the host and efficient luminescence from CD-PCRs dopants. We will use state-of-the-art LiF/Al cathodes, and ITO anodes optimised for hole injection via oxygen-plasma treatment prior to coating with hole-injection/electron-blocking layers, e.g. phthalocyanines, PVK, or molecularly engineered PEDOT:PSS spin-coated or self assembled multi-layers.
Key Findings
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Further Information:
Organisation Website:	http://www.cam.ac.uk