多核阳离子型金属铱配合物的设计合成及其性质研究

发布时间：2018-10-10 11:28

【摘要】：有机电致磷光材料一直是人们研究的热点,在众多的材料当中金属铱配合物由于诸多优点而备受人们的关注。然而,金属铱磷光材料本身所存在的聚集诱导猝灭(ACQ)现象一直制约着材料的发展。近年来,人们发现了一种新的方法来抑制ACQ现象,即合成多核金属铱磷光材料。对于金属铱配合物来说,中心金属铱在其发光性质中起到了至关重要的作用。众所周知,重金属原子效应所引起的强的自旋耦合作用是金属铱配合物发射磷光的原因,增加中心金属铱的数目有可能增大自旋耦合作用,所以在一个发光体中引入两个或者多个中心金属不失为一种影响配合物性质的方法。因此,设计合成多核的金属铱磷光材料不仅可以丰富金属铱配合物的种类,在实际应用上也具有很大的意义。基于上述思想,设计并成功的合成了具有良好性质的多核阳离子型金属铱配合物,并对其在化学传感以及光学器件中的应用进行了探索。具体工作如下:(1)利用含有柔性链修饰的三氮唑-吡啶基团作为桥联配体,合成了双核和三核的阳离子型金属铱配合物DC-Ir和TC-Ir。结合实验现象,详细地讨论了其在爆炸物检测中的效果及其猝灭原理,扩大它们在爆炸物检测方面的应用。(2)利用同一种含有柔性链的桥联配体L,合成了两种双核阳离子型金属铱配合物DI-1和DI-2。基于其优异的光物理性质,设计合成了单层非掺杂型的光学器件,并研究了器件的各项性能,得到了很好的效果。
[Abstract]:Organic electrophosphorescent materials have been the focus of research. Among the many materials, the metal iridium complexes have attracted much attention because of their many advantages. However, the aggregation induced quenching of (ACQ) in iridium phosphorescent materials has been restricting the development of the materials. In recent years, a new method has been developed to suppress the ACQ phenomenon, that is, the synthesis of polynuclear iridium phosphorescent materials. For the metal iridium complexes, the central metal iridium plays an important role in its luminescent properties. It is well known that the strong spin-coupling effect caused by heavy metal atoms is the cause of phosphorescence emitted by the metal iridium complexes. Increasing the number of the central metal iridium may increase the spin-coupling effect. Therefore, the introduction of two or more central metals into a luminescent is a method to influence the properties of the complexes. Therefore, the design and synthesis of polynuclear iridium phosphorescent materials can not only enrich the variety of metal iridium complexes, but also have great significance in practical applications. Based on the above ideas, the polynuclear cationic iridium complexes with good properties have been designed and successfully synthesized, and their applications in chemical sensing and optical devices have been explored. The main works are as follows: (1) the binuclear and trinuclear cationic iridium complexes DC-Ir and TC-Ir. were synthesized by using triazole-pyridine group modified with flexible chain as bridged ligands. Combined with the experimental phenomena, the effect and quenching principle in explosive detection are discussed in detail. (2) two binuclear cationic iridium complexes DI-1 and DI-2. were synthesized using the same bridged ligand L containing flexible chain. Based on its excellent photophysical properties, a monolayer undoped optical device was designed and synthesized, and the properties of the device were studied, and good results were obtained.
【学位授予单位】：东北师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O641.4

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