1. College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
2. Shandong Analysis and Tester Centre, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
3. Laoshan Laboratory, Qingdao 266237, P. R. China