6533b7ddfe1ef96bd1273675
RESEARCH PRODUCT
A magnetic self-contained thermochromic system with convenient temperature range
Natalia V. PlechkovaKenneth R. SeddonH. Q. Nimal GunaratneFrancesca D'annaFloriana BilleciFloriana BilleciGrace G. Morgansubject
chemistry.chemical_classificationThermochromismIonic liquids thermochromic systemMaterials science010405 organic chemistryAnalytical chemistrychemistry.chemical_elementNuclear magnetic resonance spectroscopyPolymercobalt complexesSettore CHIM/06 - Chimica OrganicaAtmospheric temperature range010402 general chemistry01 natural sciencesPollution0104 chemical scienceschemistry.chemical_compoundOctahedronchemistry13. Climate actionIonic liquidEnvironmental ChemistryCobaltCoordination geometrydescription
A new ionic liquid with sugar-based ligand has been prepared and used to coordinate cobalt(II), at low loading, in an ionic liquid solution. The system obtained reveals magnetic switching and marked thermochromism in solution/polymer films over a convenient temperature range (20–60 °C). This system is self-contained, devoid of any volatile substances, and reproducible over multiple thermal cycles. The colour change can be attributed to a change in the coordination geometry from octahedral (pink) at room temperature to tetrahedral (blue) on warming, monitored by 59Co NMR spectroscopy, which was used for the first time to study the change. This material may find applications in stimuli-responsive smart systems aimed at energy storage applications.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 |