Synthesis, morphology and photophysical properties of amphipathic rod-coil poly[2,7-(9,9- dihexylfluorene)] -block-poly(2-vinyl pyridine) and its blending with inorganic nanoparticles

• Main Authors: Hsu, Chung-Yi, 許鐘乙
• Other Authors: Yu,Yang-Yen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/88114808712770458757

碩士 === 明志科技大學 === 化工與材料工程研究所 === 97 === In this study, the amphiphilic PF-b-P2VP block copolymers with three different coil lengths, PF10-b-P2VP35, PF10-b-P2VP55, and PF10-b-P2VP75, were synthesized by ATRP. The effect of coil length, morphology in the dilute THF/MeOH solution, and heating temperature on the microstructure and photophysical properties of PF-b-P2VP was discussed. GPC, FTIR, and 1H NMR analysis indicated the successful synthesis of the desired amphiphilic PF-b-P2VP block copolymer with three different coil lengths. TEM analysis showed that the spherical micelles, worm-like micelles, rod micelles, large compound micelles, dendritic micelles, inverted spherical micelles and inverted worm-like micelles could be observed at PF-b-P2VP block copolymer with three different coil lengths dissolved in the mixed solvents at different MeOH/THF ratios (methanol contents 0~90%). Moreover, both spectra of optical absorption and fluorescence emission obtained from the copolymer in solution and PF-b-P2VP thin films showed an obvious blue shift when the fraction of methanol in mixed solvent and heating temperature increased, respectively. After annealing treatments at 120℃ and 240℃, the PF-P2VP had a better thermostability compared with PF-Br when the temperature is high. When the prepared PF-b-P2VP was blended with CdS and CdSOH, it was found that the effect of CdSOH on the optical properties of PF-b-P2VP was greater than those obtained from CdS