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Research Article

Two-dimensional d-π conjugated metal-organic framework based on hexahydroxytrinaphthylene

Zheng Meng, Katherine A. Mirica( )
Department of Chemistry, Burke Laboratory, 41 College Street, Dartmouth College, Hanover, NH 03755, USA
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Abstract

The development of new two-dimensional (2D) d-π conjugated metal-organic frameworks (MOFs) holds great promise for the construction of a new generation of porous and semiconductive materials. This paper describes the synthesis, structural characterization, and electronic properties of a new d-π conjugated 2D MOF based on the use of a new ligand 2,3,8,9,14,15- hexahydroxytrinaphthylene. The reticular self-assembly of this large π-conjugated organic building block with Cu(II) ions in a mixed solvent system of 1,3-dimethyl-2-imidazolidinone (DMI) and H2O with the addition of ammonia water or ethylenediamine leads to a highly crystalline MOF Cu3(HHTN)2, which possesses pore aperture of 2.5 nm. Cu3(HHTN)2 MOF shows moderate electrical conductivity of 9.01 × 10-8 S·cm-1 at 385 K and temperature-dependent band gap ranging from 0.75 to 1.65 eV. After chemical oxidation by I2, the conductivity of Cu3(HHTN)2 can be increased by 360 times. This access to HHTN based MOF adds an important member to previously reported MOF systems with hexagonal lattice, paving the way towards systematic studies of structure-property relationships of semiconductive MOFs.

Keywords

two-dimensionalmetal-organic framework (MOF)trinaphthyleneconductive MOF

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Nano Research
Volume 14 Issue 2,
February 2021
Pages 369-375
DOI: 10.1007/s12274-020-2874-x
Cite this article:
Meng Z, Mirica KA. Two-dimensional d-π conjugated metal-organic framework based on hexahydroxytrinaphthylene. Nano Research, 2021, 14(2): 369-375. https://doi.org/10.1007/s12274-020-2874-x
Topics:
Ammonium hydroxideElectronic propertiesEnergy gapMetalsNanocrystalline materials Organic frameworks Organic polymersOrganometallics

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Received: 20 January 2020
Revised: 30 April 2020
Accepted: 11 May 2020
Published: 03 July 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature
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