1. Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
2. Department of Chemistry, Saarland University, Campus B2.2, Saarbrücken, Germany
3. Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Piazzale Aldo Moro 5, 00185 Rome, Italy
4. Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS, 69364 Lyon, France
5. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, 30332-0400, USA
6. Department of Chemistry, King's College London, 7 Trinity Street, London SE1 1DB, UK
7. Department of Physics, Brooklyn College of CUNY, Brooklyn, New York, 11210, USA
8. Department of Physics and Astronomy, Hunter College of CUNY, New York, 10065, USA
9. London Centre for Nanotechnology, University College London, 17–19 Gordon Street, London WC1H 0AH, UK