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

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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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
Identifiers:
NumberType
10.1021/acsanm.2c01389DOI
1553442Other
Divisions: Schools > School of Science and Technology
Record created by: Jonathan Gallacher
Date Added: 17 Jun 2022 09:04
Last Modified: 17 Jun 2022 09:04
URI: http://irep.ntu.ac.uk/id/eprint/46463

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