CHCl3GPC for polymer molecular weight analysis was carried out with Waters system (515 HPLC pump and 2410 refractive refractive index detector), Acme 9000 UV/Vis detector, and Shodex GPC LF-804 column eluted CHCl3(HPLC grade, J. T. Baker). Flow rate was 0.8 mL/min and temperature of column was maintained at 35 °C.