Tunable Electrical Conductivity in Metal-Organic Framework Thin-Film Devices

Science ◽  
2013 ◽  
Vol 343 (6166) ◽  
pp. 66-69 ◽  
Author(s):  
A. Alec Talin ◽  
Andrea Centrone ◽  
Alexandra C. Ford ◽  
Michael E. Foster ◽  
Vitalie Stavila ◽  
...  
Keyword(s):  
Thin Film ◽  
Electrical Conductivity ◽  
First Principles ◽  
Metal Organic Framework ◽  
Electronic Devices ◽  
Electronic Coupling ◽  
Guest Molecules ◽  
Redox Active ◽  
Metal Organic ◽  
Thin Film Devices

We report a strategy for realizing tunable electrical conductivity in metal-organic frameworks (MOFs) in which the nanopores are infiltrated with redox-active, conjugated guest molecules. This approach is demonstrated using thin-film devices of the MOF Cu3(BTC)2 (also known as HKUST-1; BTC, benzene-1,3,5-tricarboxylic acid) infiltrated with the molecule 7,7,8,8-tetracyanoquinododimethane (TCNQ). Tunable, air-stable electrical conductivity over six orders of magnitude is achieved, with values as high as 7 siemens per meter. Spectroscopic data and first-principles modeling suggest that the conductivity arises from TCNQ guest molecules bridging the binuclear copper paddlewheels in the framework, leading to strong electronic coupling between the dimeric Cu subunits. These ohmically conducting porous MOFs could have applications in conformal electronic devices, reconfigurable electronics, and sensors.

scholarly journals Switchable electrical conductivity in a three-dimensional metal–organic framework via reversible ligand n-doping

2020 ◽  
Vol 11 (5) ◽  
pp. 1342-1346 ◽  
Author(s):  
Hanna C. Wentz ◽  
Grigorii Skorupskii ◽  
Ana B. Bonfim ◽  
Jenna L. Mancuso ◽  
Christopher H. Hendon ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Redox Active Ligands ◽  
Redox Active ◽  
N Doping ◽  
Metal Organic ◽  
Organic Framework

Redox-active ligands are used to reversibly tune electrical conductivity in a porous 3D metal–organic framework (MOF).

scholarly journals Charge-transfer interactions between fullerenes and a mesoporous tetrathiafulvalene-based metal–organic framework

2019 ◽  
Vol 10 ◽  
pp. 1883-1893 ◽  
Author(s):  
Manuel Souto ◽  
Joaquín Calbo ◽  
Samuel Mañas-Valero ◽  
Aron Walsh ◽  
Guillermo Mínguez Espallargas
Keyword(s):  
Electrical Conductivity ◽  
Charge Transfer ◽  
Density Functional ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Spectroscopic Techniques ◽  
Functional Theory ◽  
Guest Molecules ◽  
Crucial Step ◽  
Metal Organic

The design of metal–organic frameworks (MOFs) incorporating electroactive guest molecules in the pores has become a subject of great interest in order to obtain additional electrical functionalities within the framework while maintaining porosity. Understanding the charge-transfer (CT) process between the framework and the guest molecules is a crucial step towards the design of new electroactive MOFs. Herein, we present the encapsulation of fullerenes (C60) in a mesoporous tetrathiafulvalene (TTF)-based MOF. The CT process between the electron-acceptor C60 guest and the electron-donor TTF ligand is studied in detail by means of different spectroscopic techniques and density functional theory (DFT) calculations. Importantly, gas sorption measurements demonstrate that sorption capacity is maintained after encapsulation of fullerenes, whereas the electrical conductivity is increased by two orders of magnitude due to the CT interactions between C60 and the TTF-based framework.

scholarly journals Investigation of Charge-Transfer Interactions Induced by Encapsulating Fullerene in a Mesoporous Tetrathiafulvalene-Based Metal-Organic Framework

2019 ◽  
Author(s):  
Manuel Souto ◽  
Joaquín Calbo ◽  
Samuel Mañas-Valero ◽  
Aron Walsh ◽  
Guillermo Minguez Espallargas
Keyword(s):  
Electrical Conductivity ◽  
Charge Transfer ◽  
Density Functional ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Density Functional Theory Calculations ◽  
Spectroscopic Techniques ◽  
Functional Theory ◽  
Guest Molecules ◽  
Metal Organic

<p>The design of Metal-Organic Frameworks (MOFs) incorporating electroactive guest molecules in the pores has become a subject of great interest in order to install additional electrical functionalities within the framework while maintaining porosity. In this direction, understanding the charge-transfer (CT) process between the framework and the guest molecules is crucial towards the design of new electroactive MOFs. Herein, we present the encapsulation of fullerenes (C<sub>60</sub>) in a mesoporous tetrathiafulvalene(TTF)-based MOF. The CT process between the electron-acceptor C<sub>60 </sub>guest and the electron-donor TTF ligand is studied in detail by means of different spectroscopic techniques and density functional theory calculations. Importantly, gas sorption measurements demonstrate that sorption capacity is maintained after encapsulation of fullerenes, whereas the electrical conductivity is increased by two orders of magnitude due to the CT interactions between C<sub>60</sub>and the TTF-based framework. </p>

Highly Hydrophobic and Chemically Rectifiable Surface-Anchored Metal-Organic Framework Thin-Film Devices

2016 ◽  
Vol 3 (13) ◽  
pp. 1500738 ◽  
Author(s):  
Shammi Rana ◽  
Ranguwar Rajendra ◽  
Barun Dhara ◽  
Plawan Kumar Jha ◽  
Nirmalya Ballav
Keyword(s):  
Thin Film ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Highly Hydrophobic ◽  
Thin Film Devices ◽  
Organic Framework

scholarly journals Iodine Adsorption in a Redox-Active Metal–Organic Framework: Electrical Conductivity Induced by Host−Guest Charge-Transfer

2019 ◽  
Vol 58 (20) ◽  
pp. 14145-14150 ◽  
Author(s):  
Xinran Zhang ◽  
Ivan da Silva ◽  
Rodrigo Fazzi ◽  
Alena M. Sheveleva ◽  
Xue Han ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Charge Transfer ◽  
Metal Organic Framework ◽  
Redox Active ◽  
Active Metal ◽  
Metal Organic ◽  
Iodine Adsorption ◽  
Redox Active Metal ◽  
Organic Framework

Investigation of Charge-Transfer Interactions Induced by Encapsulating Fullerene in a Mesoporous Tetrathiafulvalene-Based Metal-Organic Framework

2019 ◽  
Author(s):  
Manuel Souto ◽  
Joaquín Calbo ◽  
Samuel Mañas-Valero ◽  
Aron Walsh ◽  
Guillermo Minguez Espallargas
Keyword(s):  
Electrical Conductivity ◽  
Charge Transfer ◽  
Density Functional ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Density Functional Theory Calculations ◽  
Spectroscopic Techniques ◽  
Functional Theory ◽  
Guest Molecules ◽  
Metal Organic

<p>The design of Metal-Organic Frameworks (MOFs) incorporating electroactive guest molecules in the pores has become a subject of great interest in order to install additional electrical functionalities within the framework while maintaining porosity. In this direction, understanding the charge-transfer (CT) process between the framework and the guest molecules is crucial towards the design of new electroactive MOFs. Herein, we present the encapsulation of fullerenes (C<sub>60</sub>) in a mesoporous tetrathiafulvalene(TTF)-based MOF. The CT process between the electron-acceptor C<sub>60 </sub>guest and the electron-donor TTF ligand is studied in detail by means of different spectroscopic techniques and density functional theory calculations. Importantly, gas sorption measurements demonstrate that sorption capacity is maintained after encapsulation of fullerenes, whereas the electrical conductivity is increased by two orders of magnitude due to the CT interactions between C<sub>60</sub>and the TTF-based framework. </p>

scholarly journals Ultrathin Metal-Organic Framework Nanosheets and Devices

2021 ◽  
Author(s):  
AshokKumar Meiyazhagan
Keyword(s):  
Electrical Conductivity ◽  
Metal Organic Framework ◽  
Electronic Devices ◽  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
Conductivity Measurements ◽  
Metal Organic ◽  
Organic Framework

Abstract A few recent findings on ultrathin two-dimensional (2D) metal-organic frameworks (MOFs) were discussed in this spotlight review. MOFs are a class of materials with intriguing properties for possible applications in several fields ranging from catalysis to sensors and functional devices. To date, several synthesis strategies have been explored to derive crystalline 2D MOF structures. However, most synthetic strategies to obtain such materials remain underexplored. This highlighted review evaluated select synthesis strategies focused on deriving micron-sized 2D MOF crystals, emphasizing their rich chemistries. More importantly, the possibility of integrating the synthesized ultrathin 2D crystalline MOFs into the functional device and their electrical conductivity measurements are reviewed. Overall, this review provides the most recent outcomes in the ultrathin 2D MOF community and its influence on electronic devices.

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