1. Department of Chemistry College of Sciences Tianjin University of Science &Technology Tianjin 300457 People's Republic of China
2. PhotoGreen Lab Department of Chemistry University of Pavia V. Le Taramelli 12 Pavia Italy
3. Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China