Recent Development and Application of Conductive MOFs

Abstract

The electrical conductivity of crystalline MOFs is a highly demanding property. The realization of conductivity in MOFs will result in many important applications. The main challenge lies in the balance of porosity and conductivity, which needs a judicious choice of metal clusters and ligands. As a result, there are only a handful of intrinsic conductive MOFs reported with two different conductivity pathways existed independently or simultaneously. These two conductive channels are through bond or through space. A comparable strategy to develop extrinsic conductive MOFs is emerging. With several strategies to access conductive MOFs, many important applications associated with conductivity have been found, such as chemiresistive sensoring, field effective transistors, supercapacitors and so on. Overall, only a small portion of the advantages and potentials of conductive MOFs have been achieved, further development will constantly offer new opportunities.

Host–Guest Interactions in Metal–Organic Frameworks Doped with Acceptor Molecules as Revealed by Resonance Raman Spectroscopy

“… 1 − 9 Various synthetic design strategies were developed in the last decade in order to produce frameworks with permanent porosity and long-range charge transport. Whereas intrinsically conducting MOFs can be prepared using a limited number of specific linkers containing sulfur atoms, quinone groups, or aromatic amines, 5 − 7 , 9 another strategy consists in doping of nonconducting MOFs with redox-active conjugated guest molecules.…”

Direct grafting-from of PEDOT from a photoreactive Zr-based MOF – a novel route to electrically conductive composite materials

“…Electrical conductivity is currently a much sought-after property in metal-organic frameworks for applications like sensing, energy storage or electronics. [23][24][25][26][27][28][29] Also applications in coatings of neuronal electrodes could be of interest, as they would allow electrical stimulation of nerve cells/registration of neuronal signals combined with drug delivery from the pores of the MOF. However, only very few MOFs exhibit intrinsic electrical conductivity.…”

Coupled Electrical Conduction in Coordination Polymers: From Electrons/Ions to Mixed Charge Carriers

“…Structural features, such as rich active metal sites, confined nano-space and good electronic conductivity, make the conductive CPs as a promising answer for energy storage systems like fuel cells, supercapacitors, and batteries. [19] For example, a single layer metalÀ THT framework (THT = triphenylene-2,3,6,7,10,11-hexathiol) shows an excellent improvement on hydrogen evolution reaction. [26] Supercapacitors are known for high power density and excellent cycling stability, therefore play a vital role in the fields of electrical vehicles etc.…”