1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
2. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
3. Department of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, United States
4. Bayerisches Geoinstitute, University of Bayreuth, Bayreuth 95440, Germany
5. Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
6. Beijing National Laboratory for Molecular Sciences, Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China