1. Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
2. Beijing National Laboratory for Molecular Sciences (BNLMS)State Key Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesUniversity of Chinese Academy of Sciences Beijing 100190 China