Thermal conductivity of two-dimensional benzobisoxazole-linked covalent organic frameworks with nanopores: implications for thermal management applications

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Moscarello, E.M., Wooten, B.L., Sajid, H., Tichenor, L.D., Heremans, J.P., Addicoat, M.A. ORCID: 0000-0002-5406-7927 and McGrier, P.L., 2022. Thermal conductivity of two-dimensional benzobisoxazole-linked covalent organic frameworks with nanopores: implications for thermal management applications. ACS Applied Nano Materials. ISSN 2574-0970

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Official URL: https://doi.org/10.1021/acsanm.2c01389

Abstract

Thermal management is essential for maintaining the optimal performance of electronic devices. Although covalent–organic frameworks (COFs) have emerged as a platform for gas and energy storage applications, their thermal transport properties are greatly understudied. Herein, we report the thermal conductivities of three benzobisoxazole (BBO)-linked COFs with nanpores ranging from 1.3 to 2.5 nm over a wide temperature range (80–300 K) using the longitudinal, steady-state heat-flow method. In doing so, thermal conductivity values as high as 0.677 W m–1 K–1 at 300 K were obtained, and no relationship between the thermal conductivity and pore size was observed. These results were supported by density functional theory calculations. The thermal conductivities of the BBO-COFs doped with poly(3-hexylthiophene) were also investigated. The BBO-COFs could be useful as ultralow-k materials for thermal management applications.

Item Type:

Journal article

Publication Title:

ACS Applied Nano Materials

Creators:

Moscarello, E.M., Wooten, B.L., Sajid, H., Tichenor, L.D., Heremans, J.P., Addicoat, M.A. and McGrier, P.L.

Publisher:

American Chemical Society

Date:

10 June 2022

ISSN:

2574-0970