Issue 11, 2023

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Abstract

We impregnated the sugar alcohols (SAs) erythritol and mannitol (Man) in >0.1 mm single crystals of a covalent organic framework, COF-300, to propose new solid-state heat storing materials. The fusion-freezing cycles of the Man–COF composite occur in a narrow range of 130–155 °C without large or random supercooling, which has been a crucial problem of SAs, indicating the significance of this materials concept. The Man–COF composite displayed two endothermic and two exothermic features in the heating/cooling cycles. We measured the heat transmission properties in detail, based on which we discuss and suggest a postulate on the phase change behaviour of Man in the pores of the COF.

Graphical abstract: Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Supplementary files

Article information

Article type
Communication
Submitted
13 jun 2023
Accepted
14 aug 2023
First published
14 aug 2023

Mater. Horiz., 2023,10, 4922-4929

Author version available

Composite formation of covalent organic framework crystals and sugar alcohols for exploring a new class of heat-storage materials

Y. Murakami, S. Mitsui, S. Nakagawa, X. Wang, H. Fujisawa, M. Ryu and J. Morikawa, Mater. Horiz., 2023, 10, 4922 DOI: 10.1039/D3MH00905J

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