1. Institute of Organic Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
2. Centre for Advanced Materials Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
3. Department of Chemistry and Pharmacy Chair of Theoretical Chemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
4. Department of Chemistry and Pharmacy Interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
5. Department of Chemistry and Pharmacy Chair of General and Inorganic Chemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstr. 1 91058 Erlangen Germany
6. Nanomaterials Research Institute (NMRI) National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka Ikeda, Osaka 563-8577 Japan
7. Department of Chemistry Graduate School of Science and Technology Kwansei Gakuin University Sanda 669-1337 Japan