Doping of metal–organic frameworks towards resistive sensing

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 demons...

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Published inScientific reports Vol. 7; no. 1; pp. 2439 - 8
Main Authors Shiozawa, Hidetsugu, Bayer, Bernhard C., Peterlik, Herwig, Meyer, Jannik C., Lang, Wolfgang, Pichler, Thomas
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 26.05.2017
Nature Publishing Group
Nature Portfolio
Subjects
140/133
140/146
639/301/1005/1007
639/301/357/995
639/925/357/404
639/925/357/995
Cobalt
Conduction
Humanities and Social Sciences
multidisciplinary
Physical properties
Polymerization
Porous materials
Science
Science (multidisciplinary)
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Summary: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.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-02618-y