1. Department of Theoretical Chemistry and Biology School of Engineering Sciences in Chemistry, Biotechnology and Health KTH Royal Institute of Technology 106 91 Stockholm Sweden
2. Division of Chemistry, Department of Physics Chemistry and Biology Linköping University 581 83 Linköping Sweden
3. Department of Physics-Faculty of Natural Sciences Norwegian University of Science and Technology (NTNU) 7491 Trondheim Norway
4. Laboratory of Organic Electronics and Scientific Visualization Group ITN and Swedish e-Science Research Center (SeRC) Linköping University 581 83 Linköping Sweden