Doping of metal-organic frameworks towards resistive sensing

Author(s)

Hidetsugu Shiozawa, Bernhard C. Bayer, Herwig Peterlik, Jannik C. Meyer, Wolfgang Lang, Thomas Pichler

Abstract

Coordination polymerization leads to various metal–organic frameworks (MOFs) with unique physical properties and chemical functionalities. One of the challenges towards their applications as porous materials is to make MOFs optimally conductive to be used as electronic components. Here, it is demonstrated that Co-MOF-74, a honeycomb nano–framework with one–dimensionally arranged cobalt atoms, advances its physical properties by accommodating tetracyanochinodimethan (TCNQ), an acceptor molecule. Strong intermolecular charge transfer reduces the optical band gap down to 1.5 eV of divalent TCNQ and enhances the electrical conduction, which allows the MOF to be utilized for resistive gas- and photo-sensing. The results provide insight into the electronic interactions in doped MOFs and pave the way for their electronic applications.

Organisation(s)

Electronic Properties of Materials, Physics of Nanostructured Materials, Dynamics of Condensed Systems

Journal

Scientific Reports

Volume

7

No. of pages

8

ISSN

2045-2322

DOI

https://doi.org/10.1038/s41598-017-02618-y

Publication date

05-2017

Peer reviewed

Yes

Austrian Fields of Science 2012

103009 Solid state physics, 103018 Materials physics, 103020 Surface physics

Keywords

Portal url

https://ucris.univie.ac.at/portal/en/publications/doping-of-metalorganic-frameworks-towards-resistive-sensing(4415a20e-3a71-4a00-9dd4-f8adcd714a76).html