1. School of Materials Science and EngineeringBeihang University Beijing 100191 China
2. Department of Chemistry—Ångström, Physical ChemistryUppsala University Uppsala 75120 Sweden
3. Laboratory of Photomolecular ScienceInstitute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de Lausanne Station 6 Lausanne CH‐1015 Switzerland