线性分子组成的二维聚苯胺的制备及性能研究

发布时间：2018-06-06 19:22

本文选题：二维聚苯胺 + 线性高分子　；参考：《吉林大学》2017年博士论文

【摘要】：石墨烯的研究证明了材料的维度是决定其性能的重要因素之一,进而推动了二维材料的迅猛发展。但其中重要的分支—二维有机材料的发展仍处于起步阶段,制备尺寸较大、结构规整的可独立稳定存在的二维有机材料是目前的研究热点与难点,也是后续研究的基础。本论文以苯胺为单体,通过电化学氧化聚合的方法在不同基底上分别制备了具有规整层状周期结构的单晶聚苯胺薄膜及非晶聚苯胺薄膜。并以此为基础,采用不同的剥离方法制备了不同层数和尺寸大小的二维聚苯胺片,其中单层聚苯胺的尺寸可达8μm,厚度仅为9?。更为重要的是,该二维有机材料由线性的聚苯胺分子链组成,仅在一维方向上存在共价键,打破了人们对二维有机材料的认识,充分证明了利用离子键、氢键、ππ作用力等非共价作用力同样可制备稳定的二维有机材料。同时,基于密度泛函理论的计算对实验结果和现象进行了进一步的证明和阐释,并采用不同的实验手段对该二维聚苯胺晶体的物理性能进行了研究。
[Abstract]:The study of graphene has proved that the dimension of materials is one of the important factors to determine the properties of graphene, which promotes the rapid development of two-dimensional materials. However, the development of two-dimensional organic materials, which is an important branch, is still in its infancy. The preparation of two-dimensional organic materials with large size and regular structure, which can exist independently and stably, is the focus and difficulty of the current research, and is also the basis of further research. In this paper, single crystal Polyaniline thin films and amorphous Polyaniline thin films with regular lamellar periodic structure were prepared on different substrates by electrochemical oxidation polymerization of aniline as monomer. On this basis, two-dimensional polyphenylamine sheets with different layers and sizes were prepared by different peeling methods. The size of the monolayer Polyaniline was 8 渭 m and the thickness was only 9 渭 m. More importantly, the two-dimensional organic material is composed of linear Polyaniline molecular chains, and only covalent bonds exist in one-dimensional direction, which breaks the understanding of two-dimensional organic materials and fully proves the use of ionic bonds. Non-covalent forces such as hydrogen bonds and 蟺 forces can also be used to prepare stable two-dimensional organic materials. At the same time, the experimental results and phenomena are further proved and explained based on the density functional theory, and the physical properties of the two-dimensional Polyaniline crystal are studied by different experimental methods.
【学位授予单位】：吉林大学
【学位级别】：博士
【学位授予年份】：2017
【分类号】：O633.21

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