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Updated: May 7, 2025
06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Organic ionic plastic crystals having colossal barocaloric effects for sustainable refrigeration
Samantha L Piper1, Leena Melag1, Mega Kar1
1Institute for Frontier Materials, Deakin University, Burwood, VIC, Australia.
Science (New York, N.Y.)
|January 2, 2025
Summary
Organic ionic plastic crystals (OIPCs) show promise for energy-efficient cooling. These new barocaloric (BC) materials exhibit large entropy changes and tunable properties for sustainable refrigeration applications.
Area of Science:
- Materials Science
- Thermodynamics
- Solid-State Physics
Background:
- Barocaloric (BC) materials enable energy-efficient refrigeration via pressure-induced phase transitions.
- Existing BC materials often lack suitable transition temperatures for domestic applications.
Purpose of the Study:
- Introduce organic ionic plastic crystals (OIPCs) as a novel class of BC materials.
- Investigate the potential of OIPCs for sustainable cooling technologies.
Main Methods:
- Synthesis and characterization of OIPCs.
- Measurement of barocaloric effects, including transition temperatures and entropy changes.
- Tuning of BC properties through structural modification of ionic components.
Main Results:
- OIPCs exhibit subambient transition temperatures.
- Demonstrated colossal entropy changes ranging from 92 to 240 J/kg·K.
- High pressure sensitivity observed, up to 23.7 K/kbar.
- Tunable BC responses achieved through ion structural modifications.
Conclusions:
- OIPCs represent a promising new class of barocaloric materials.
- Their tunable properties and significant barocaloric effects position them for efficient and sustainable cooling.
- OIPCs offer a viable pathway towards next-generation refrigeration and air conditioning technologies.
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