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A Nanotubular Metal–Organic Framework with a Narrow Bandgap from Extended Conjugation

Ayhan, MM; Bayraktar, C; Yu, KB; Hanna, G; Yazaydin, AO; Zorlu, Y; Yücesan, G; (2020) A Nanotubular Metal–Organic Framework with a Narrow Bandgap from Extended Conjugation. Chemistry 10.1002/chem.202001917. (In press). Green open access

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Abstract

A one‐dimensional nanotubular metal–organic framework (MOF) [Ni(Cu‐H4TPPA)]⋅2 (CH3)2NH2+ (H8TPPA=5,10,15,20‐tetrakis[p‐phenylphosphonic acid] porphyrin) constructed by using the arylphosphonic acid H8TPPA is reported. The structure of this MOF, known as GTUB‐4, was solved by using single‐crystal X‐ray diffraction and its geometric accessible surface area was calculated to be 1102 m2 g−1, making it the phosphonate MOF with the highest reported surface area. Due to the extended conjugation of its porphyrin core, GTUB‐4 possesses narrow indirect and direct bandgaps (1.9 eV and 2.16 eV, respectively) in the semiconductor regime. Thermogravimetric analysis suggests that GTUB‐4 is thermally stable up to 400 °C. Owing to its high surface area, low bandgap, and high thermal stability, GTUB‐4 could find applications as electrodes in supercapacitors.

Type: Article
Title: A Nanotubular Metal–Organic Framework with a Narrow Bandgap from Extended Conjugation
Location: Germany
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/chem.202001917
Publisher version: https://doi.org/10.1002/chem.202001917
Language: English
Additional information: Copyright © 2020 The Authors. Published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
Keywords: high surface area, ligand design, metal-organic frameworks, nanotubes, semiconductive MOFs
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10110847
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