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

ABSTRACT: A one-dimensional nanotubular metal-organic framework (MOF) [Ni(Cu-H4 TPPA)]?2?(CH3 )2 NH2 + (H8 TPPA=5,10,15,20-tetrakis[p-phenylphosphonic acid] porphyrin) constructed by using the arylphosphonic acid H8 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?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.

SUBMITTER: Ayhan MM 

PROVIDER: S-EPMC7756393 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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

Ayhan M Menaf MM   Bayraktar Ceyda C   Yu Kai Bin KB   Hanna Gabriel G   Yazaydin A Ozgur AO   Zorlu Yunus Y   Yücesan Gündoğ G  

Chemistry (Weinheim an der Bergstrasse, Germany) 20201015 65

A one-dimensional nanotubular metal-organic framework (MOF) [Ni(Cu-H<sub>4</sub> TPPA)]⋅2 (CH<sub>3</sub> )<sub>2</sub> NH<sub>2</sub> <sup>+</sup> (H<sub>8</sub> TPPA=5,10,15,20-tetrakis[p-phenylphosphonic acid] porphyrin) constructed by using the arylphosphonic acid H<sub>8</sub> 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<sup>2</sup>  g<sup>-1</sup> , ma  ...[more]

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