1. Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, P.R. China
2. School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, P.R. China
3. College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, P.R. China
4. Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea