卟啉改性聚芴功能材料的制备及光电性能  

Preparation of Porphyrin-Modified Polyfluorene Functional Materials and Their Optoelectronic Properties

作　　者：孙赛 况挺 蒋建忠 高凯 张斌[2] 李真 董文芊 SUN Sai;KUANG Ting;JIANG Jianzhong;GAO Kai;ZHANG Bin;LI Zhen;DONG Wenqian(Sinopec(Shanghai)Petrochemical Research Institute Co.Ltd.,Shanghai 201208,China;Key Laboratory for Advanced Materials,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]中石化(上海)石油化工研究院有限公司,上海201208 [2]华东理工大学化学与分子工程学院,教育部结构可控先进功能材料及其制备重点实验室,上海200237

出　　处：《功能高分子学报》2025年第1期87-96,共10页Journal of Functional Polymers

基　　金：中国石化优秀青年科技创新基金。

摘　　要：神经突触仿生在实现高效人工神经网络中至关重要,其中的关键是寻找到合适的材料。有机高分子材料可以通过设计结构来调节电学性能而备受关注。通过Suzuki偶联将金属卟啉和聚芴结合得到功能材料聚芴-锌卟啉聚合物(PF-ZnPor),该材料具有较好的热稳定性且可溶于极性溶剂。以PF-ZnPor为活性层,采用溶液旋涂法制备了结构为Al/PF-ZnPor/ITO的器件并应用于突触仿生研究,该器件成功模拟了突触的增强和抑制、记忆-遗忘-再记忆等类人脑学习行为。Neural synapse mimicry plays a crucial role in realizing efficient artificial neural networks,and finding suitable materials for synapse mimicry devices is critical.Among many alternative materials,organic polymers can be designed with different structures to modulate the electrical properties,thus attracting the attention of researchers.The redox property of metal porphyrin and the charge transport property of polyfluorene were bonded to the same molecule by Suzuki coupling.Then the porphyrin-containing polyfluorene functional material(PF-ZnPor)was obtained,which had good thermal stability and was soluble in polar solvents.The structure of polymers was verified by X-ray photoelectron spectroscopy(XPS),UVvisible absorption spectroscopy and steady-state fluorescence spectroscopy,and thermogravimetric analysis of their stability.Using PF-ZnPor as the active layer,devices with the structure of Al/PF-ZnPor/ITO by solution spin-coating were prepared and applied to synapse mimicry research.The devices successfully simulated the synaptic enhancement and inhibition,the learning behavior of the human-like brain of remembering-forgetting-remembering,and so on.The effect of different thicknesses of the active layer on the device performance was also investigated.The results show that the electrical performance of the devices diminishes with increasing thickness of the active layer film. The HOMO energy level, LUMO energy level, and electrostatic potential (ESP) surface of the basic unit of PF-ZnPor were simulated by density-functional theory (DFT). The theoretical validation is in agreement with the actual experimental results. This study provides a new idea for the design of organic polymer resistive change materials applied to synaptic bionic devices.

关 键 词：神经突触仿生 聚芴 卟啉 阻变材料 忆阻器 

分 类 号：O69[理学—化学] TB34[一般工业技术—材料科学与工程] O633.5