中文摘要：

通过将咔唑和芴衍生物之间进行Suzuki偶联反应得到大分子引发剂，再通过原子转移自由基聚合引入8-羟基喹啉和叔丁基功能化的丙烯酸酯类单体，得到了具有刚性主链柔性侧链结构的蓝光聚合物分子刷P2和P3．聚合物P2在四氢呋喃中的紫外吸收最大峰在330nm左右，薄膜的紫外吸收峰基本没有变化，聚合物P2在四氢呋喃中的荧光发射峰在460nm的蓝光区域，薄膜的荧光发射峰有10nm左右的蓝移．聚合物P3在四氢呋喃中的紫外吸收最大峰在355nm左右，薄膜的紫外吸收峰没有变化，荧光发射在430nm的蓝光区域，薄膜的荧光发射峰红移了50nm．左右．对聚合物P2在不同温度、不同体积比水和四氢呋喃混合溶剂以及溶液pH值条件下自组装形成胶束的行为发现，聚合物P2在溶液pH值为11时，形成“核一壳”结构的胶束；在不同实验条件下聚合物P2自组装形成胶束的形貌也有较大区别．对聚合物P3不同实验条件下自组装形成胶束的行为发现，聚合物P3在体积比为3：2的四氢呋喃和水混合溶剂中更易形成稳定的胶束；聚合物P3的水溶性比聚合物P2差，这使该聚合物更易在水含量更高的混合溶剂中形成规整的球形胶束．

英文摘要：

In order to investigate the explicit self-assembly variations of the photoluminescent polymers under different micro-environments,two pH-responsive blue light emitting polymer molecular brushes （P2 and P3） were successfully synthesized through Suzuki coupling reaction and atom transfer radical polymerization. The molecular structures of polymers P2 and P3were fully characterized by 1H-NMR,13 C-NMR, elemental analysis and gel-permeation chromatograph,respectively. The Fourier transform infrared spectra of polymers P2 and P3 in thin solid films further verified the successful synthesis of polymer molecular brushes through atom transfer radical polymerization. The photophysical properties and self-assembly behaviors of polymers P2 and P3were examined through UV-Vis absorption, photoluminescent emission spectra, dynamic laser light scattering and transmission electron microscopy under different experimental conditions. The self-assembly variations of polymers P2 and P3 in different solvents or temperatures were studied to illustrate the correlation between the morphologies of the formed vesicles and the chemical structures of the polymers. The size and morphologies of the formed vesicles from polymers P2 and P3 can be effectively tuned in a range of 2100 nm to 300 nm with the shape of sphere,spindle, hollow and nuclear-shell structure. The water solubility of polymer P3 is worse than that of polymer P2,which makes polymer P3 easier to form sphere-shaped vesicles in the mixture solvent of tetrahydrofuran and water with more water proporation. This work can serve as an excellent exploratory example for the fine self-assembly control in the blue-light emitting polymer molecular brushes with different amphipathic side chains.