A Nanotubular Metal-Organic Framework with a Narrow Bandgap from Extended Conjugation*.

Autor: Ayhan MM; Department of Chemistry, Faculty of Science, Gebze Technical University, 41400, Gebze, Kocaeli (Turkey., Bayraktar C; Department of Chemistry, Faculty of Science, Gebze Technical University, 41400, Gebze, Kocaeli (Turkey., Yu KB; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK., Hanna G; University of Alberta, Department of Chemistry, 116 St. and 85 Ave., Edmonton, Alberta, T6G 2R3, Canada., Yazaydin AO; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK., Zorlu Y; Department of Chemistry, Faculty of Science, Gebze Technical University, 41400, Gebze, Kocaeli (Turkey., Yücesan G; Technische Universität Berlin, Department of Food Chemistry and Toxicology, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2020 Nov 20; Vol. 26 (65), pp. 14813-14816. Date of Electronic Publication: 2020 Oct 15.
DOI: 10.1002/chem.202001917
Abstrakt: A one-dimensional nanotubular metal-organic framework (MOF) [Ni(Cu-H 4 TPPA)]⋅2 (CH 3 ) 2 NH 2 + (H 8 TPPA=5,10,15,20-tetrakis[p-phenylphosphonic acid] porphyrin) constructed by using the arylphosphonic acid H 8 TPPA 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 m 2  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.
(© 2020 The Authors. Published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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