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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24893

Title: Linker Functionalization in MIL-47(V)-R Metal–Organic Frameworks: Understanding the Electronic Structure
Authors: Vanpoucke, D. E. P.
Issue Date: 2017
Citation: Journal of Physical Chemistry C, 121(14), p. 8011-8022
Abstract: Metal organic frameworks (MOFs) have gained much interest due to their intrinsic tunable nature. In this work, we study how linker functionalization modifies the electronic structure of the host MOF, more specifically, the MIL-47(V)-R (R = -F, -Cl, -Br, -OH, -CH3(,) -CF3, and -OCH3). It is shown that the presence of a functional group leads to a splitting of the pi orbital on the linker. Moreover, the upward shift of the split:off pi-band correlates well with the electron-withdrawing/donating nature of the functional groups. For halide functional groups the presence of lone-pair back-donation is corroborated by calculated Hirshfeld-I charges. In the case of the ferromagnetic configuration of the host MIL-47(V+IV) material a half-metal to insulator transition is noted for the -Br, -OCH3, and -OH functional groups, while for the antiferromagnetic configuration only the hydroxy group results in an effective reduction of the band gap.
URI: http://hdl.handle.net/1942/24893
DOI: 10.1021/acs.jpcc.7b01491
ISI #: 000399629000047
ISSN: 1932-7447
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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