In-Plane Oriented Two-Dimensional Conjugated Metal-Organic Framework Films for High-Performance Humidity Sensing

Park SW, Zhang Z, Qi H, Liang B, Mahmood J, Noh HJ, Hambsch M, Wang M, Wang M, Ly KH, Wang Z, Weidinger IM, Zhou S, Baek JB, Kaiser U, Mannsfeld SCB, Feng X, Dong R (2022)

Publication Type: Journal article

Publication year: 2022

Journal

ACS Materials Letters ACS Publications

Book Volume: 4

Pages Range: 1146-1153

Journal Issue: 6

DOI: 10.1021/acsmaterialslett.2c00160

Abstract

Two-dimensional conjugated metal-organic frameworks (2D c-MOFs) have emerged as a new generation of conducting MOFs for electronics. However, controlled synthesis of thin-film samples with high crystallinity and defined layer orientation, which is beneficial for achieving high-performance devices and reliable structure-property relationship, has remained a challenge. Here, we develop a surfactant-directed two-step synthesis of layered 2D c-MOF films based on benzene and triphenylene ligands linked by copper-bis(diimino) complexes (HIB-Cu and HITP-Cu, respectively). The achieved layered 2D c-MOF films are featured as free-standing, in-plane oriented, and polycrystalline films with domain size up to ∼8000 nm2and a tunable thickness in the range of 8-340 nm. Benefiting from the intrinsic electrical conductivity and quasi-one-dimensional pore channels, a HIB-Cu film based chemiresistive sensor is constructed, displaying effective humidity sensing with a response as fast as ∼21 s, superior to the reported MOF-powder-based chemiresistive sensors (in the orders of minutes).

Involved external institutions

Ulsan National Institute of Science and Technology (UNIST) / 울산과학기술원 KR Korea, Republic of (KR) Universität Ulm DE Germany (DE) Technische Universität Dresden DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Park, S.W., Zhang, Z., Qi, H., Liang, B., Mahmood, J., Noh, H.-J.,... Dong, R. (2022). In-Plane Oriented Two-Dimensional Conjugated Metal-Organic Framework Films for High-Performance Humidity Sensing. ACS Materials Letters, 4(6), 1146-1153. https://doi.org/10.1021/acsmaterialslett.2c00160

MLA:

Park, Sang Wook, et al. "In-Plane Oriented Two-Dimensional Conjugated Metal-Organic Framework Films for High-Performance Humidity Sensing." ACS Materials Letters 4.6 (2022): 1146-1153.

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