【作者】 丁锐；

【导师】 杨家祥；

【作者基本信息】 安徽大学 ， 材料工程， 2015， 硕士

【摘要】 光电功能材料是材料领域的研究热点,对社会经济发展具有巨大的推动作用。特别是有机光电功能材料,其具有结构明确、容易提纯、利于裁剪和自组装等优点,在OLED、化学传感器和生物显影等领域有广泛的应用。近年来,人们报道了很多性能优异的有机光电功能材料,但是多数有机发光分子的发光效率仍然较低,发展高荧光有机光电材料具有一定的理论和现实意义。本文在充分调研相关文献的基础上,将具有优良发光性能的氰基取代二苯乙烯结构引入到发光分子中,设计、合成了一系列具有优异发光性能的新型氰基取代二苯乙烯衍生物,并通过引入螯合基团,合成具有氰基取代二苯乙烯结构的有机硼化合物,使用紫外吸收光谱、荧光发射光谱和量子化学计算等对化合物的光物理性质进行了初步研究。主要内容如下：1、通过Knoevenagel缩合反应,Williamson反应,设计、合成了两类具有不同推-拉电子基团的D-π-A和D-π-D型氰基取代二苯乙烯衍生物。采用FT-IR、 1H NMR、13C NMR对其结构进行了表征,采用紫外可见吸收光谱、荧光发射光谱和密度泛函理论计算,进行性质研究。发现引入烷氧基后,由于其位阻效应和电子效应,对化合物的光物理性质有明显的影响。2、设计、合成一系列具有分子内荧光共振能量转移性质的化合物,通过FT-IR、 1H NMR、13C NMR对其结构进行表征,采用紫外吸收光谱、荧光发射光谱和密度泛函理论计算对其分子内FRET过程进行初步探索。结果表明：将具有优良发光性质的氰基二苯乙烯衍生物作为能量供体,通过烷基链与能量受体连接到一个分子中,能够发生有效分子内能量转移。3、设计、合成一系列氰基取代二苯乙烯希夫碱(4a-4f)及有机硼化合物(Y12-Y17),通过FT-IR、1H NMR、13C NMR、MS对其结构进行表征,采用紫外可见吸收光谱、荧光发射光谱和密度泛函理论计算对其光物理性质进行研究。研究结果表明,与配体相比,引入缺电子硼,化合物摩尔吸收系数明显增加,发光效率大幅提高。更多还原

【Abstract】 Optoelectronic functional material is a hot topic in material field and plays a huge role in promoting social and economic development. Especially, the organic optoelectronic functional materials have the advantages of exact structure, easy purification, easy tailored and self-assembly, which have been widely applied in OLEDs, chemosensor and bioimaging. Recently, there are a great of organic optoelectronic functional materials with excellent properties have been reported. However, most of organic fluorophores have a lower luminous efficiency. To develop high emission materials is significant in theory and practice. According to the previous literature, in this paper, a series of novel α-cyanostilbene derivatives with excellent emissive properties have been designed and synthesized by introducing α-cyanostilbene to organic luminophors. Further, the boron complexes were synthesized using chelate groups functionalized α-cyanostilbene derivatives. Their photophysics properties were investigated using absorption spectra, fluorescence spectra and DFT calculations. The main research contents are as follow:1. The two type D-π-A and D-π-D α-cyanostilbene derivatives with different push-pull groups were designed and synthesized by Knoevenagel and Williamson reactions. FT-IR,1H NMR and 13C NMR were used to characterize their structure. Their photophysics properties were investigated by absorption spectra, fluorescence spectra and DFT calculations. The steric effect and electron effect of alkoxy have a deeply effect on the photophysics properties of compounds.2. Compounds with intramolecular FRET properties have been designed and synthesized, which were characterized by FT-IR,1H NMR and 13C NMR. Their photophysics properties were investigated using absorption spectra, fluorescence spectra and DFT calculations. The results showed that the efficiently intramolecular FRET was occurred through connecting donor of the α-cyanostilbene derivatives with excellent emissive properties with acceptor by alkyl group to one molecule.3. α-Cyanostilbene Schiff base derivatives and their boron complexes have been designed and synthesized and characterized by FT-IR,1H NMR and 13C NMR. The properties were preliminarily investigated by absorption spectra, fluorescence spectra and DFT calculations. Comparing to the ligands, the molar absorption coefficients and emission of the boron complexes were highly enhancement.更多还原