1. Photobiology Research, Internationales Handelszentrum (IHZ), Friedrichstraße 95, 10117 Berlin, Germany
2. Dalton Cumbrian Facility, Westlakes Science Park, The University of Manchester, Cumbria CA24 3HA, UK
3. School of Chemical and Physical Sciences, Keele University, Staffordshire ST5 5BG, UK