Confinement in metal-organic frameworks as a route to harnessing liquid barocalorics in the solid-state
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911329492664320 |
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| author | Zeng, Ming Rendell-Bhatti, Frederic Connolly, Eamonn T. Wang, Yang Tamarit, Josep-Lluís Forgan, Ross S. Lloveras, Pol Boldrin, David |
| author_facet | Zeng, Ming Rendell-Bhatti, Frederic Connolly, Eamonn T. Wang, Yang Tamarit, Josep-Lluís Forgan, Ross S. Lloveras, Pol Boldrin, David |
| contents | Barocaloric (BC) effects at liquid-vapor transitions in hydrofluorocarbons drive most commercial technologies used for heating and cooling in the heating, ventilation and air-conditioning sector. However, these fluids suffer from huge global warming potential and alternative gases are less efficient, toxic or flammable. Solid-solid and solid-liquid BC materials have zero global warming potential and could even improve on current device efficiencies. Whilst solid-liquid BCs typically outperform solid-solid BCs, the latter are advantageous as they avoid leaks and present easier handling and recyclability thus facilitating waste management. Here we confine the solid-liquid BC stearic acid inside the nanopores of a functionalised metal-organic framework (MOF) and demonstrate that the colossal BC properties are retained in a solid-state material. Moreover, the enhanced interactions between the pore surface and the BC material allow a level of active control over the thermal response, as opposed to passive encapsulation. Our results open novel avenues to exploit and tune colossal BC effects in a wide range of combinations of solid-liquid BC materials embedded within functionalized MOFs, without the associated engineering drawbacks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_18541 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Confinement in metal-organic frameworks as a route to harnessing liquid barocalorics in the solid-state Zeng, Ming Rendell-Bhatti, Frederic Connolly, Eamonn T. Wang, Yang Tamarit, Josep-Lluís Forgan, Ross S. Lloveras, Pol Boldrin, David Materials Science Barocaloric (BC) effects at liquid-vapor transitions in hydrofluorocarbons drive most commercial technologies used for heating and cooling in the heating, ventilation and air-conditioning sector. However, these fluids suffer from huge global warming potential and alternative gases are less efficient, toxic or flammable. Solid-solid and solid-liquid BC materials have zero global warming potential and could even improve on current device efficiencies. Whilst solid-liquid BCs typically outperform solid-solid BCs, the latter are advantageous as they avoid leaks and present easier handling and recyclability thus facilitating waste management. Here we confine the solid-liquid BC stearic acid inside the nanopores of a functionalised metal-organic framework (MOF) and demonstrate that the colossal BC properties are retained in a solid-state material. Moreover, the enhanced interactions between the pore surface and the BC material allow a level of active control over the thermal response, as opposed to passive encapsulation. Our results open novel avenues to exploit and tune colossal BC effects in a wide range of combinations of solid-liquid BC materials embedded within functionalized MOFs, without the associated engineering drawbacks. |
| title | Confinement in metal-organic frameworks as a route to harnessing liquid barocalorics in the solid-state |
| topic | Materials Science |
| url | https://arxiv.org/abs/2512.18541 |