Ligand engineering in Cu(II) paddle wheel metal–organic frameworks for enhanced semiconductivity
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Published version
Author(s)
Golomb, Matthias
Calbo, Joaquín
Bristow, Jessica K
Walsh, Aron
Type
Journal Article
Abstract
We report the electronic structure of two metal-organic frameworks (MOFs) with copper paddle wheel nodes connected by a N<sub>2</sub>(C<sub>2</sub>H<sub>4</sub>)<sub>3</sub> (DABCO) ligand with accessible nitrogen lone pairs. The coordination is predicted, from first-principles density functional theory, to enable electronic pathways that could facilitate charge carrier mobility. Calculated frontier crystal orbitals indicate extended electronic communication in DMOF-1, but not in MOF-649. This feature is confirmed by bandstructure calculations and effective masses of the valence band egde. We explain the origin of the frontier orbitals of both MOFs based on the energy and symmetry alignment of the underlying building blocks. The effects of doping on the bandstructure of MOF-649 are considered. Our findings highlight DMOF-1 as a potential semiconductor with 1D charge carrier mobility along the framework
Date Issued
2020-06-17
Date Acceptance
2020-06-17
Citation
Journal of Materials Chemistry A, 2020, 8, pp.13160-13165
ISSN
2050-7488
Publisher
Royal Society of Chemistry
Start Page
13160
End Page
13165
Journal / Book Title
Journal of Materials Chemistry A
Volume
8
Copyright Statement
© The Royal Society of Chemistry 2020. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence http://creativecommons.org/licenses/by/3.0/.
License URL
Identifier
https://pubs.rsc.org/en/content/articlehtml/2020/ta/d0ta04466k
Subjects
0303 Macromolecular and Materials Chemistry
0912 Materials Engineering
0915 Interdisciplinary Engineering
Publication Status
Published
Date Publish Online
2020-06-17