基于喹喔啉及三苯胺骨架的電儲存材料的設(shè)計合成及其性能研究
[Abstract]:With the rapid growth of the amount of information, it is important to study the significance of the storage of information materials and nanoscale devices in the.2010. We have achieved a breakthrough in the realization of the "zero" of organic small molecule information storage and storage by the regulation of molecular structure by the regulation of molecular structure. The research of sub three power storage is going deep and deeply, looking at the current research status, although it is more close to the demand for the future ultra high density information storage (~1015 bits/cm2), the information memory parts with high efficiency, stability, convenience and large storage capacity are needed, and the research status of organic small molecule electrical storage materials and devices is still far from now. Therefore, it is still a long way to go through the design of molecular structure to optimize the performance of mechanical and electrical storage. Opportunities and challenges coexist. Combined with the optimization strategy of organic electronics device performance, the performance modulation of organic small molecule electrical memory parts on isomeric effects, different spacer groups and electronic effects. There are still few reports on control, so it is of great significance to further design and study the influence of the related molecules on the performance of the devices. This paper mainly starts from the following aspects: (1) the study of the effects of isomers on the performance of the multi system memory parts: the synthesis of two organic small molecules QU-1 based on the isomers of the isomers And QU-2, the effects on the photoelectric performance, the film morphology and the memory performance of the device are investigated. The devices based on these two small molecules show the performance of the three WORM storage. The results show that the linear QU-2 has more compact accumulation, smaller surface roughness and good layer stacking compared with QU-1, and the devices prepared have shown a better performance. Low threshold voltage and high current ratio. By comparing the two isomers based on the two isomers, it provides a favorable reference for the subsequent optimization of the synthesis of new small molecular storage materials. (2) the study of the effects of the substituents of the electron donor N atoms on the property of the M-ary memory: the synthesis of two organic small molecules Qu-Ph and Q U-Oct, in which the carbazole as the donor group, carbazole as the donor group, the different substituents on carbazole N atoms are phenyl (Qu-Ph) and alkyl chain (Qu-Oct). The results show that the assembled ITO/ organic small molecule /Al sandwich structure devices all have the three inlet WORM storage property, and the alkyl alkyl on the carbazole N atom is aromatic. After the substitution of the benzene ring, the free space of the substituents becomes smaller, and the rigid enhancement eventually leads to the more compact morphology of the molecules and the more compact accumulation. The regular morphology and compact accumulation can effectively reduce the transfer energy barrier of the carrier, so that the Qu-Ph shows a lower opening voltage. We believe that aromatic benzene rings are used. The substitution of alkyl chains can be used as an effective strategy to optimize the performance of ultrahigh density information storage devices. (3) study the effect of aromatic septum between two receptor units on the performance of memory parts: two three aniline - pion - pion - methylpropyl two nitrile derivatives, TPAQPh and TPAQFu., have the same donor and receptor, The difference is that the spacer groups of the two INTERBODIES are respectively phenyl and furanolyl. The results show that the ITO/ organic small molecule /Al sandwich structure devices all have three WORM storage properties, but the film morphology of the molecules becomes more regular after the replacement of the benzene ring with the septal furan, and the accumulation becomes compact and orderly, which is beneficial to the carrier flow. The migration of the subunit leads to the decrease of the opening voltage of the device, and the reason is that the introduction of the furan ring effectively weakens the distortion angle of the fragment of the azoline and the two nitrile fragment. The small molecular storage materials and the fine control of the devices have provided favorable references. (4) the effect of the number of branches connected to the central function group on the performance of the memory parts was studied. Three organic small molecules (TPA-nBBT n=1,2,3) with different number of phenyl benzothiazole branched chains based on three aniline were successfully synthesized. The ITO/ organic fraction of the assembly was assembled. The sub /Al sandwich structure devices all exhibit binary volatile (SRAM) electrical storage characteristics. The results show that the number of three aniline chains in the central functional group has an important effect on the performance of the device. With the increase of the number of branched chains, the thermal stability of the device increases, the weight is more repeatable, and the opening voltage of the device is also significantly reduced. The TPA-3BBT molecule shows the best performance. With the increase of temperature, the film remains stable and the stability of the device is maintained. The results show that the performance of the device can be adjusted effectively by adjusting the number of the chain of three aniline. This will be a new design for the future. It provides strong support for material molecules with better performance.
【學(xué)位授予單位】:蘇州大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2016
【分類號】:TP333;O621.1
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