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Updated: Apr 26, 2026

Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
An organic spin crossover material in water from a covalently linked radical dyad
Margarita R Geraskina1, Alexander T Buck, Arthur H Winter
1Department of Chemistry, Iowa State University , 2101d Hach Hall, Ames, Iowa 50011, United States.
Abstract:
A covalently linked viologen radical cation dyad acts as a reversible thermomagnetic switch in water. Cycling between diamagnetic and paramagnetic forms by heating and cooling is accompanied by changes in optical and magnetic properties with high radical fidelity. Thermomagnetic switches in water may eventually find use as novel biological thermometers and in temperature-responsive organic materials where the changes in properties originate from a change in electronic spin configuration rather than a change in structure.
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