1. Department of Chemistry; University of Missouri-Kansas City; Kansas City Missouri 64110 USA
2. Department Hubei Collaborative Innovation Center for Advanced Organochemical Materials; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules; Hubei University; Wuhan 430062 P. R. China
3. State Key Laboratory of Luminescence and Applications; Changchun Institute of Optics, Fine Mechanics and Physics; Chinese Academy of Sciences; Changchun 130033 P. R. China
4. College of Science; China Three Gorges University; Yichang 443002 P. R. China