Solution‐Processable Metal–Organic Framework Nanosheets with Variable Functionalities

Solution‐Processable Metal–Organic Framework Nanosheets with Variable Functionalities

Advanced Materials

10.1002/adma.202101257

http://dx.doi.org/10.1002/adma.202101257

Hongye Yuan, Guoliang Liu, Zhiwei Qiao, Nanxi Li, Pio John S. Buenconsejo, Shibo Xi, Avishek Karmakar, Mengsha Li, Hong Cai, Stephen John Pennycook, Dan Zhao

Mechanical Engineering, General Materials Science, Mechanics of Materials

31 May 2021

Yuan, H., Liu, G., Qiao, Z., Li, N., Buenconsejo, P. J. S., Xi, S., Karmakar, A., Li, M., Cai, H., Pennycook, S. J., & Zhao, D. (2021). Solution‐Processable Metal–Organic Framework Nanosheets with Variable Functionalities. Advanced Materials, 33(29), 2101257. Portico. https://doi.org/10.1002/adma.202101257

Metal–organic frameworks (MOFs) intrinsically lack fluidity and thus solution processability. Direct synthesis of MOFs exhibiting solution processability like polymers remains challenging but highly sought-after for multitudinous applications. Herein, a one-pot, surfactant-free, and scalable synthesis of highly stable MOF suspensions composed of exceptionally large (average area > 15 000 µm2) NUS-8 nanosheets with variable functionalities and excellent solution processability is presented. This is achieved by adding capping molecules during the synthesis, and by judicious controls of precursor concentration and MOF nanosheet–solvent interactions. The resulting 2D NUS-8 nanosheets with variable functionalities exhibit excellent solution processability. As such, relevant monoliths, aero- and xerogels, and large-area textured films with a great homogeneity, controllable thickness, and appreciable mechanical properties can be facilely fabricated. Additionally, from both the molecular- and chip-level it is demonstrated that capacitive sensors integrated with NUS-8 films functionalized with different terminal groups exhibit distinguishable sensing behaviors toward acetone due to their disparate host–guest interactions. It is envisioned that this simple approach will greatly facilitate the integration of MOFs in miniaturized electronic devices and benefit their mass production.

Publisher Copyright

This research / project is supported by the Agency for Science, Technology and Research - Integrated Photonics Based Gas Sensor (IAF-PP)
Grant Reference no. : A1789a0024

This research / project is supported by the A*STAR - Individual Research Grant
Grant Reference no. : A1783c0015

This research / project is supported by the National Research Foundation - POCEMON
Grant Reference no. : NRF2018- NRF-ANR007

This research / project is supported by the Ministry of Education - AcRF Tier 1
Grant Reference no. : R-279-000-540-114

This research / project is supported by the Ministry of Education - AcRF Tier 2
Grant Reference no. : MOE2018-T2-2-148

This research / project is supported by the Ministry of Education - AcRF Tier 2
Grant Reference no. : MOE2019-T2-1-093

National Natural Science Foundation of China (Nos. 21978058, 21676094, and 22001122

This is the peer reviewed version of the following article: Yuan, H., Liu, G., Qiao, Z., Li, N., Buenconsejo, P. J. S., Xi, S., Karmakar, A., Li, M., Cai, H., Pennycook, S. J., & Zhao, D. (2021). Solution‐Processable Metal–Organic Framework Nanosheets with Variable Functionalities. Advanced Materials, 33(29), 2101257. Portico. https://doi.org/10.1002/adma.202101257 , which has been published in final form at doi.org/10.1002/adma.202101257. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited

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