Synthesis and Characterization of a Novel Green Photoluminescent Silicon-Containing Poly(<i>p</i>-phenylenevinylene)
作者:Zhi-Kuan Chen、Lian-Hui Wang、En-Tang Kang、Yee-Hing Lai、Wei Huang
DOI:10.1246/bcsj.72.1941
日期:1999.8
A novel solution processable photoluminescent polymer containing silyl groups has been successfully synthesized through a polycondensation reaction. The polymer was characterized through FT-IR, NMR, UV-vis spectroscopy, photoluminescent spectroscopy (PL), elemental analysis and cyclic voltammetry (CV). A TGA analysis shows that the polymer is stable up to 300 °C both in air and in nitrogen. The UV-vis absorption spectra for both the solution and film samples are very similar. The band gap obtained from the optical spectra is 2.53 eV. The maximum emissions of photoluminescence are at 494 and 507 nm for the solution and film samples, respectively. The UV-vis spectrum of its polymer film also shows a very small temperature dependence. A cyclic voltammogram illustrates that the polymer can be reversibly n-doped and dedoped in a negative sweep and irreversibly p-doped during a positive sweep. All of the results demonstrate that the obtained polymer is a promising green-light emission material for PLED applications.
通过缩聚反应,成功合成了一种含有硅基的新型溶液可加工光致发光聚合物。通过傅立叶变换红外光谱、核磁共振、紫外-可见光谱、光致发光光谱(PL)、元素分析和循环伏安法(CV)对该聚合物进行了表征。热重分析表明,这种聚合物在空气和氮气中的稳定性可达 300°C。溶液和薄膜样品的紫外-可见吸收光谱非常相似。光学光谱得出的带隙为 2.53 eV。溶液和薄膜样品的光致发光最大发射波长分别为 494 纳米和 507 纳米。其聚合物薄膜的紫外可见光谱也显示出很小的温度依赖性。循环伏安图显示,聚合物在负向扫描时可逆地掺入正向和负向掺杂,而在正向扫描时则不可逆地掺入正向和负向掺杂。所有这些结果都表明,所获得的聚合物是一种很有前途的绿光发光材料,可用于聚光发光二极管(PLED)。