含稠环基硅-硅键聚合物的合成及其光电特性研究

Since Burroughes first found the electrluminescence properties of poly(4-phenylenevinylene) in 1990, hundreds of different conjugated polymers light-emitting in various portions of the visible spectrum have been reported and used to fabricate light-emitting diodes. σ-Conjugated polysilane polymers as optical and electrical materials also show great application potentialities. In this work more than ten new silanes with condensed ring groups first were synthesized, and thereby new σ-πconjugated polymers contaning Si-Si bonds with condensed ring groups on Si atoms and optical, electrical and nonlinear optical properties were designed and prepared. The maximum fluorescence emission wavelength of partial polymers obtained reaches 475nm and the maximum UV absorption wavelength, 326nm. Prepared the corresponding charge transfer complexes by doping; studied the doping mechanisms and the charge transfer mechanisms. The polymers change form insulators to conductors by doping. Through characterization of molecular structures, spectrum analysis and measurement of properties of the polymers, effects of various factors on their properties were explained. The experiments show that introduction of condensed ring groups onto side chains of the polymers not only arises UV absorptions of the polymers and makes the polymers be of special fluorescence emission properties but also modifys light and heat stability of the polymers. This provides important grounds for synthesis of polymers containing Si-Si bonds with optical and electrical properties and applicabilities and use as functional materials. For molecular design of the polymers and investigation on reaction mechanisms and charge transfer mechanisms, two-photon and nonlinear optical properties, basic reaction kinetics and intermolecular charge tranfer properties of chromophores, conjugated organic molecules, silylenoids and silanes adducts were calculated using quantum chemistry methods, which provides important theoretical information for deep study and use of the polymers mentioned above and inferences of reaction mechanisms.

合成多种新的含稠环基硅烷单体，进而设计合成具有光电，非线性光学等特性的新型含稠环基硅-硅键聚合物。制备相应的电荷转移复合物，研究掺杂机理，电荷转移机制，通过光谱治觯阅懿馐裕鞲髦忠蛩囟跃酆衔锏奶匦в跋煊牍媛桑鞠钅渴艄柰檠芯康墓是把兀跛枷胄掠保谌莘岣唬哂写葱滦裕杂诜岣缓头⒄咕酃柰檠芯苛煊蚓哂兄匾庖?..