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Room-Temperature Interfacial Synthesis of Vinylene-Bridged Two-Dimensional Covalent Organic Framework Thin Film for Nonvolatile Memory
ACS Materials Letters ( IF 9.6 ) Pub Date : 2023-02-21 , DOI: 10.1021/acsmaterialslett.2c01047 Dongchuang Wu 1 , Qiang Che 1 , Haidong He 2 , Mohamed E. El-Khouly 3 , Senhe Huang 4 , Xiaodong Zhuang 4 , Bin Zhang 1 , Yu Chen 1
ACS Materials Letters ( IF 9.6 ) Pub Date : 2023-02-21 , DOI: 10.1021/acsmaterialslett.2c01047 Dongchuang Wu 1 , Qiang Che 1 , Haidong He 2 , Mohamed E. El-Khouly 3 , Senhe Huang 4 , Xiaodong Zhuang 4 , Bin Zhang 1 , Yu Chen 1
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The development of large-area two-dimensional all sp2 carbon-linked covalent organic frameworks (COFs) film still remains a challenge, because of the shortage of the effective synthesis methods and optimal building blocks. To date, all vinylene-bridged COFs synthesized by solvothermal method at high temperatures and pressures are insoluble and unprocessable powders, which lead to a formidable challenge in fabricating thin film-based electronic and optoelectronic devices. By using a liquid–liquid interface polymerization strategy, a vinylene-bridged COF film with a complete sp2-carbon skeleton has been successfully synthesized for the first time at room temperature. The COF nanospheres initially formed at the liquid–liquid interface slowly transmuted themselves into self-standing COF thin films with long-range ordered arrangement by covalent self-assembly. The as-fabricated electronic device with a configuration of Al/COFs/ITO exhibited a nonvolatile rewritable memory effect with a low switching-on voltage of +0.84 V. Associated with its bistable switching performance, this device is capable of executing simple “OR” logic operations.
中文翻译：
用于非易失性存储器的亚乙烯基桥接二维共价有机骨架薄膜的室温界面合成
由于缺乏有效的合成方法和最佳结构单元，开发大面积二维全 sp 2碳连接的共价有机骨架 (COFs) 薄膜仍然是一个挑战。迄今为止，在高温高压下通过溶剂热法合成的所有亚乙烯基桥联 COF 都是不溶且不可加工的粉末，这给制造基于薄膜的电子和光电器件带来了巨大挑战。通过使用液-液界面聚合策略，具有完整 sp 2 的亚乙烯基桥联 COF 薄膜-碳骨架首次在室温条件下合成成功。最初在液-液界面形成的 COF 纳米球通过共价自组装将自身缓慢转变为具有长程有序排列的自支撑 COF 薄膜。具有 Al/COFs/ITO 配置的制造电子器件表现出非易失性可重写记忆效应，具有 +0.84 V 的低开启电压。与其双稳态开关性能相关，该器件能够执行简单的“或”逻辑运算。
更新日期：2023-02-21
中文翻译：
用于非易失性存储器的亚乙烯基桥接二维共价有机骨架薄膜的室温界面合成
由于缺乏有效的合成方法和最佳结构单元，开发大面积二维全 sp 2碳连接的共价有机骨架 (COFs) 薄膜仍然是一个挑战。迄今为止，在高温高压下通过溶剂热法合成的所有亚乙烯基桥联 COF 都是不溶且不可加工的粉末，这给制造基于薄膜的电子和光电器件带来了巨大挑战。通过使用液-液界面聚合策略，具有完整 sp 2 的亚乙烯基桥联 COF 薄膜-碳骨架首次在室温条件下合成成功。最初在液-液界面形成的 COF 纳米球通过共价自组装将自身缓慢转变为具有长程有序排列的自支撑 COF 薄膜。具有 Al/COFs/ITO 配置的制造电子器件表现出非易失性可重写记忆效应，具有 +0.84 V 的低开启电压。与其双稳态开关性能相关，该器件能够执行简单的“或”逻辑运算。
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