Thermal Conductivity of Covalent-Organic Frameworks

Abstract

Covalent-organic frameworks (COFs) are a highly promising class of materials that can provide an excellent platform for thermal management applications. In this Perspective, we first review previous works on the thermal conductivities of COFs. Then we share our insights on achieving high, low, and switchable thermal conductivities of future COFs. To obtain the desired thermal conductivity, a comprehensive understanding of their thermal transport mechanisms is necessary but lacking. We discuss current limitations in atomistic simulations, synthesis, and thermal conductivity measurements of COFs and share potential pathways to overcoming these challenges. We hope to stimulate collective, interdisciplinary efforts to study the thermal conductivity of COFs and enable their wide range of thermal applications.

Accurate Thermal Conductivity Measurements of Porous Thin Films by Time-Domain Thermoreflectance

“…Fundamentally, our approach could be employed to measure directional heat transport by coherent phonons in phononic crystals and to investigate thermal transport mechanisms in porous films with ultralow thermal conductivity beyond the minimum thermal conductivity . Our approach could also contribute to understanding of thermal transport porous materials important for emerging applications, e.g., porous electrodes in Li-ion batteries and fuel cells, covalent-organic frameworks (COFs) for gas storage and separations applications, and porous films for thermoelectric devices and thermal insulation …”

First-principles prediction of the thermal conductivity of two configurations of difluorinated graphene monolayer

“…6,34–39 Simultaneously, researchers in the field of thermal management concentrate on enhancing κ L to efficiently transfer heat from heat sources to the surrounding environment. 40–44 Consequently, gaining a comprehensive understanding of the thermal transport properties of novel materials is essential, as it can provide valuable insights for tuning κ L . However, there has been relatively limited research conducted on the thermal properties of FG.…”

Review—Advances on Covalent Organic-Frameworks as Innovative Materials for Designing Electrochemical Sensors

“…5,13,14 Other interesting materials such as 2D borophene and metal nitrides and carbides have demonstrated superior activity in electrochemical sensors due to its remarkable bandgap, and at present, are combined with other materials to generate advanced composites that display high stability, biocompatibility and flexibility. 15 Covalent Organic-Frameworks (COFs), introduced by Yaghi and coworkers in 2005, 16 are a new class of porous materials that have attracted the attention of diverse research fields due to their thermal, [17][18][19] optical, 20,21 and reticular properties. 22,23 COFs are obtained by a diagram-directed polymerization of organic building blocks strongly linked by covalent bonds.…”