1. College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
2. Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
3. Department of Materials Science and Engineering; University of Washington; Seattle WA 98195 USA
4. Department of Physics and Astronomy; and Collaborative Innovation Center of IFSA (CICIFSA); Shanghai Jiaotong University; 800 Dongchuan Road Shanghai 200240 China
5. Department of Chemistry; City University of Hong Kong; Kowloon 999077 Hong Kong