苯并磷雜環(huán)戊二烯及其衍生物的合成方法和光電性質(zhì)研究
[Abstract]:As the same kind of compound of the same group of element nitrogen, P-hetero-cyclopentadiene is widely used in the field of organic material science due to its unique optical and electrochemical properties, and has been paid more and more attention. The phosphorus heterocyclopentadiene is characterized by a typical aromaticity and has the property of giving electrons, and the phosphorus heterocyclopentadiene has a completely different property: the phosphorus heterocyclopentadiene exhibits a very weak aromaticity and has a certain electronic acceptance capability. this is because the three-coordinated central phosphorus atom is represented as a tetrahedral space structure, so that the lone pair of electrons on the phosphorus atom can not function effectively with the valence electrons of the butadiene in the ring, The C-P bond of the ring and the butadiene in the ring * co-exist with the butadiene in the ring to form an effective 1 *-1 * super-coatonic system, which obviously reduces the lowest low-level orbital energy level of the molecular system, improves the molecular electronic affinity and thus has certain tensile and electronic properties, this facilitates the injection and transfer of electrons. The central phosphorus atoms of the phosphorus heterocyclopentadiene can produce oxides, sulfides, quaternary salts, transition metal complexes, and the like, in particular oxides and sulfides, by simple chemical modification, and exhibit high chemical and thermodynamic stability. As a special structure of the phosphorus hetero-cyclopentadiene, the benzo-phosphorus heterocyclopentadienols are widely used in the aspects of organic photoelectric functional materials (organic light-emitting diodes, solar cells), biological fluorescent probes, photochromic molecular switches, and the like. As a result, the synthesis method of the benzo-P-heterocyclopentadiene is more and more attention, but the synthesis method is still limited, and the synthesis method is still limited, and the synthesis method is still relatively limited, and the promising compound is simply and efficiently synthesized by a catalytic method, This structure is designed and synthesized on the basis of this structure, and the ladder-like coanda molecules containing both P-and Si-hetero-cyclopentadiene are designed and synthesized, and their photoelectric properties are studied. In the first chapter, firstly, the synthesis of the benzo-and-P-hetero-cyclopentadiene is introduced according to different reaction modes, and the application of them in the aspects of organic semiconductor material, organic photoelectric material, biological imaging, photochromic molecular switch and the like is further explained. Then, some studies on the organic photoelectric material and the fluorescent probe of organic molecules are described. in the second section, a new method for generating the benzand phosphorus heterocyclopentadienols by activating and cutting the C-P bonds in the molecule through the method of the Pd/ Cu-bimetallic catalytic system is introduced, the raw materials of the method are simple and easy, the reaction is one-step high-efficiency, and the atom utilization rate is high, and the defect is that the yield is relatively low, This is not only a new method for synthesizing benzo-P-, but also a new method for cutting C-P by transition metal. In the third chapter, the participation of trace air is introduced, the phosphorus free radicals are generated, then the phosphorus free radicals attack the o-position alkynyl group, and the intramolecular addition-off ring is used for generating the benzo-and-phosphorus-hetero-cyclopentadiene, and the method has the advantages of simple and easy-to-obtain raw materials. the reaction does not need to be added with the metal catalyst, and the addition of the additive is not required, the reaction separation yield is high, the atom utilization rate is high, the one-step high-efficiency is high, the resistance to the functional group is strong, and the environment-friendly is environment-friendly. Based on this reaction mechanism, this is also an effective method for the synthesis of a phosphorus-heteropolycyclic aromatic hydrocarbon. In the fourth chapter, on the basis of the reported method of synthesizing the benzene and the phosphorus hetero-cyclopentadiene, a novel ladder-type coanda molecule with both a phosphorus-and a silicon-heterocyclopentadiene skeleton is designed and synthesized, and the photoelectric characteristics thereof are studied, The results show that the compound has high solution and solid-state fluorescence quantum yield, the fluorescence is concentrated in the deep blue region, the electrochemical analysis shows that the combination has a very low reduction potential, The results show that the compound has the potential to be used as the light-emitting layer of the deep blue light-emitting material. and it is noted that the crystal of the partial oxide has the property of force-induced luminescence.
【學(xué)位授予單位】:鄭州大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2017
【分類號(hào)】:O627.51
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