1. Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
2. Division BiophotonicsFederal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
3. Institute of Chemistry and BiochemistryFreie Universität Berlin Takustraße 3 14195 Berlin Germany
4. Institute of Inorganic ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
5. Department of Chemistry and Research Center OptimasTU Kaiserslautern Erwin-Schrödinger-Straße 67663 Kaiserslautern Germany
6. Département de chimieUniversité de Montréal Montréal Québec H3C 3J7 Canada