Video recorded 2004-2005.  Interviewed by chemists Harry Kroto and Jim Feast, in this interview Richard Friend discusses his research work on conjugated polymers, time-resolved optical spectroscopy and molecular conductors and magnets.

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Professor Sir Richard Friend is Cavendish Professor of Physics and part of the Optoelectronics Group at the Cavendish Laboratory, University of Cambridge.His research interests cover:

1) Conjugated Polymers, in particular the development of new semiconducting polymers (with Dr. A. B. Holmes, Department of Cambridge and Melbourne Universities). Characterisation of properties in semiconductor device structures, including: - Polymer Light-Emitting Diodes, Thin-Film Field-Effect Transistors and Photovoltaic and Photoconductive Diodes;

2) Time-resolved optical spectroscopy: Sub-picosecond time-resolved spectroscopy, with 100fsec `white-light` laser system, used to study formation and evolution of excitonic and polaronic electronic photoexcitations 

3) Molecular conductors and magnets, the investigation of charge-transfer complexes containing pi-conjugated molecules showing metallic, antiferromagnetic and ferromagnetic behaviour.