Interfacial Engineering of Two-Dimensional Metal–Organic Framework Thin Films for Biomimetic Photoadaptative Sensors

作者：Haoyong Yang, Qihao Sun, Zhongquan Liao, Mike Hambsch, Xuerong Liu, Daheng Wu, Birgit Jost, Yuejun Zhang, Stefan C. B. Mannsfeld, Qunji Xue, Xinliang Feng, Xiaojian Zhu, Tao Zhang · 发表于：Chemistry of Materials · 年份：2023 · DOI：10.1021/acs.chemmater.3c01422 · 被引用次数：13 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、2D Materials and Applications、Nanoplatforms for cancer theranostics

Porphyrin-based two-dimensional metal–organic frameworks (2D MOFs) are of high interest for extraordinary optoelectronic devices due to their well-ordered architecture and appealing photochemical properties. However, the high-throughput synthesis of 2D MOF thin films for device applications remains challenging because of the slow nucleation and crystallization process in classical interfacial synthesis. Here, we report a microwave-assisted interfacial methodology for the rapid construction (∼3 min) of highly crystalline 2D MOF thin films and demonstrate their promising potential in biomimetic optical sensors. The resultant 2D MOF films exhibit a lateral size of up to ∼23 cm 2 and controllable thickness in the range of 2–40 nm. The crystal domain size of the 2D MOF can be up to ∼4 μm, which boasts a long-range molecular ordering and appealing optical responsive properties. The 2D MOF films enable the fabrication of biomimetic optical sensors with light intensity-dependent autonomous photoadaptation without the assistance of voltage gating. Furthermore, an artificial machine vision system consisting of a 4 × 8 2D MOF-sensor array is developed to implement adaptive image recognition under bright- and dim-light stimuli with an accuracy of over 90%.