1. Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN
2. Campus Universitari de UAB
3. 08193 Cerdanyola del Vallès (Barcelona)
4. Spain
5. Laboratory for Chemistry of Novel Materials
6. Université de Mons
7. 7000 Mons
8. Belgium
9. Department of Chemistry
10. National University of Singapore
11. Singapore 117543
12. Singapore
13. Centre for Advanced 2D Materials and Graphene Research Centre