1. Foshan University; Jiangwan 1st Road 18 528000 Foshan P. R. China
2. Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Xingke Road 368 510675 Guangzhou P. R. China
3. Key Laboratory of Cellulose and Lignocellulosics Chemistry; Chinese Academy of Sciences; 510650 Guangzhou P. R. China
4. Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics; 510650 Guangzhou P. R. China