Ultrathin two-dimensional conjugated metal-organic framework single-crystalline nanosheets enabled by surfactant-assisted synthesis

Wang Z, Wang G, Qi H, Wang M, Wang M, Park S, Wang H, Yu M, Kaiser U, Fery A, Zhou S, Dong R, Feng X (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Chemical Science Royal Society of Chemistry

Book Volume: 11

Pages Range: 7665-7671

Journal Issue: 29

DOI: 10.1039/d0sc01408g

Abstract

Two-dimensional conjugated metal-organic frameworks (2D c-MOFs) have recently emerged for potential applications in (opto-)electronics, chemiresistive sensing, and energy storage and conversion, due to their excellent electrical conductivity, abundant active sites, and intrinsic porous structures. However, developing ultrathin 2D c-MOF nanosheets (NSs) for facile solution processing and integration into devices remains a great challenge, mostly due to unscalable synthesis, low yield, limited lateral size and low crystallinity. Here, we report a surfactant-assisted solution synthesis toward ultrathin 2D c-MOF NSs, including HHB-Cu (HHB = hexahydroxybenzene), HHB-Ni and HHTP-Cu (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene). For the first time, we achieve single-crystalline HHB-Cu(Ni) NSs featured with a thickness of 4-5 nm (∼8-10 layers) and a lateral size of 0.25-0.65 μm2, as well as single-crystalline HHTP-Cu NSs with a thickness of ∼5.1 ± 2.6 nm (∼10 layers) and a lateral size of 0.002-0.02 μm2. Benefiting from the ultrathin feature, the synthetic NSs allow fast ion diffusion and high utilization of active sites. As a proof of concept, when serving as a cathode material for Li-ion storage, HHB-Cu NSs deliver a remarkable rate capability (charge within 3 min) and long-term cycling stability (90% capacity retention after 1000 cycles), superior to the corresponding bulk materials and other reported MOF cathodes. This journal is

Involved external institutions

Technische Universität Dresden DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE) Universität Ulm DE Germany (DE) Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE)

How to cite

APA:

Wang, Z., Wang, G., Qi, H., Wang, M., Wang, M., Park, S.,... Feng, X. (2020). Ultrathin two-dimensional conjugated metal-organic framework single-crystalline nanosheets enabled by surfactant-assisted synthesis. Chemical Science, 11(29), 7665-7671. https://doi.org/10.1039/d0sc01408g

MLA:

Wang, Zhiyong, et al. "Ultrathin two-dimensional conjugated metal-organic framework single-crystalline nanosheets enabled by surfactant-assisted synthesis." Chemical Science 11.29 (2020): 7665-7671.

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