Metal-Organic Framework superstructures with long-ranged orientational order via E-field assisted liquid crystal assembly
- Author(s)
- Kamal Allahyarli, Michael Reithofer, Fei Cheng, Adam J. Young, Endre Kiss, Tristan Tsai Yuan Tan, Alexander Prado-Roller, Jia Min Chin
- Abstract
Most MOFs are non-cubic, with functionality dependent upon crystallographic direction, and are largely prepared as microcrystalline powders. Therefore, general methods to orient and assemble free-standing MOF crystals are especially important and urgently needed. This is addressed here through the novel strategy of E-field assisted liquid crystal assembly, applied to MIL-53-NH2(Al), MIL-68(In) and NU1000 MOF crystals, with aspect ratios ranging from 10 to 1.2, to form highly oriented MOF superstructures which were photopolymerized to fix their long-ranged order. This new strategy for controlling MOF orientation and packing side-steps the traditional requirements of particle monodispersity, shape homogeneity and high aspect ratios (>4.7) typical of colloidal and liquid crystal assembly, and is applicable even to polydispersed MOF crystals, thereby paving the way towards the development of highly oriented MOF composites with improved functionality. (c) 2021 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
- Organisation(s)
- Department of Physical Chemistry, Department of Inorganic Chemistry, Core Facility Multimodal Imaging, Core Facility Crystal Structure Analysis
- External organisation(s)
- Agency for Science, Technology and Research A*STAR, University of Hull
- Journal
- Journal of Colloid and Interface Science
- Volume
- 610
- Pages
- 1027-1034
- No. of pages
- 8
- ISSN
- 0021-9797
- DOI
- https://doi.org/10.1016/j.jcis.2021.11.151
- Publication date
- 03-2022
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104003 Inorganic chemistry, 105113 Crystallography
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Biomaterials, Colloid and Surface Chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/5e9d57e7-f2d2-4be4-91b9-3f1fc27ca6f6