Affiliation: | 1. Department of Chemistry, University of Warwick, Warwick, CV4 7AL Coventry (UK), Fax: (+44)?24‐7652‐3819;2. Photobiology Unit, Department of Dermatology, Ninewells Hospital, Dundee, DD1 9SY (UK);3. Department of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ (UK) |