Titel
Metal-Organic Framework superstructures with long-ranged orientational order via E-field assisted liquid crystal assembly
Autor*in
Fei Cheng
Department of Chemistry, University of Hull
... show all
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 NU-1000 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.
Stichwort
Metal organic frameworksDirected assemblyE-field alignmentLiquid crystalsColloidal assembly
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Journal of Colloid and Interface Science
Band
610
ISSN
0021-9797
Erscheinungsdatum
2022
Seitenanfang
1027
Seitenende
1034
Publication
Elsevier BV
Erscheinungsdatum
2022
Zugänglichkeit
Rechte
Rechteangabe
(c) 2021 The Authors
Universität Wien | Universitätsring 1 | 1010 Wien | T
+43-1-4277-0