1. Chongqing Key Laboratory
of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
2. State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University, Guilin 541004, P. R. China
3. Department of Physics and CICECO, Aveiro
Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal