1. Polymer Chemistry, Saarland University, Campus C4 2, 66123 Saarbrücken, Germany
2. Department of Chemistry, Mass Spectroscopy, Technical University Darmstadt, Peter-Grünberg-Straße 4, 64287 Darmstadt, Germany
3. Saarene, Saarland Center for Energy Materials and Sustainability, Campus C4 2, 66123 Saarbrücken, Germany