利用Suzuki反应，合成了侧链含噻吩基团的改性乙烯基咔唑单体，采用阴离子聚合方法制备了一种新型改性聚乙烯基咔唑。通过。H核磁共振谱、红外光谱（FT—IR）、差示扫描量热法（DSC）、凝胶渗透色谱、质谱（EI）、UV—vis紫外-可见吸收光谱、荧光发射光谱等方法对单体及聚合物进行了表征，结果发现改性聚乙烯基咔唑的数均分子量Mn=2486，多分散系数PDI=1．10。紫外-可见光谱结果表明，含噻吩基团的改性乙烯基咔唑聚合物相对于乙烯基咔唑所对应的吸收峰有红移，且吸收强度增大。荧光发射光谱结果表明，聚合物较单体原料的最大发射波长红移了100nm，可作为太阳能电池给体材料应用。
A monomer of vinyl carbazole bearing thiophene groups was synthesized via Suzuki reaction, and poly (2,7-bi-2-thienyl-9-vinyl-9-H_carbazole) was successfully synthesized via anionic polymerization. 1H-NMR, Fourier transform infrared spectrometer (FT-IR), MS-El and differential scanning calorimetry (DSC) data confirm the structures of monomers and thiophene-containing poly (vinyl carbazole). Through the characterization of gel permeation chromatography (GPC), ultraviolet and visible spectroscopy (UV-vis) and fluorescence emission spectroscopy, it is found that the poly(2,7-bi- 2-thienyl- 9-vinyl- 9-H- carbazo|e) has a narrow polydispersion index (PDI = 1.10), while its maximum fluorescence emission wavelength red-shifts from 345nm to 445 nm. These results suggest that the resulting thiophene-containing poly(vinyl Carbazole) π-conjugated system possesses nice optical properties, and can be a promising candidate for solar cell donor materials.
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