Angew. Chem. Int. Ed. : Oxygen‐Assisted Cathodic Deposition of Zeolitic Imidazolate Frameworks with Controlled Thickness

Oxygen‐Assisted Cathodic Deposition of Zeolitic Imidazolate Frameworks with Controlled Thickness

Authors :

Qing Zhang,^1,+ Zhengming Wu,^1,+ Yuan Lv,¹ Yali Li,¹ Yajing Zhao,¹ Rui Zhang,¹ Yushuang Xiao,¹ Xiaofei Shi,¹ Danrui Zhang,¹ Rui Hua,¹Jianlin Yao,² Jun Guo,³Rong Huang,⁴ Yi Cui,⁴ Zhenhui Kang,¹ Subhadip Goswami,⁵ Lee Robison,⁵ Kepeng Song,⁶ Xinghua Li,⁶ Yu Han,⁶ Lifeng Chi,^1,* Omar K. Farha,^5,* Guang Lu^1,*

Insititutes :

¹ Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren’ai Road, Suzhou, 215123, China

² College of Chemistry, Chemical Engineering and Materials Science Institution, Soochow University, 199 Ren’ai Road, Suzhou, 215123, China

³ Analysis and Testing Center, Soochow University199 Ren’ai Road, Suzhou, 215123, China

⁴ Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, China

⁵ Department of Chemistry, Northwestern University Evanston, IL,60208, USA

⁶ Advanced Membranes and Porous Materials Center, PhysicalSciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia

Processing metal–organic frameworks (MOFs) as films with controllable thickness on a substrate is increasingly crucial for many applications to realize function integration and performance optimization. Herein, we report a facilec athodic deposition process that enables the large-area preparation of uniform films of zeolitic imidazolate frameworks(ZIF-8, ZIF-71, and ZIF-67) with highly tunable thickness ranging from approximately 24 nm to hundreds of nanometers. Importantly, this oxygen-reduction-triggered cathodic deposition does not lead to the plating of reduced metals (Zn and Co). It is also operable cost-effectively in the absence of supporting electrolyte and facilitates the construction of well-defined submicrometer-sized heterogeneous structures within ZIF films.

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https://onlinelibrary.wiley.com/doi/full/10.1002/anie.201808465