A spin probe is a molecule with stable free radical character that carries a functional group. This group can be used to couple the probe to another molecule, e.g. a biomolecule.

Electron spin resonance can be employed to quantify the probe's concentration.[1]

References

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  1. ^ Kveder, M.; Sentjurc, M.; Schara, M. (1988). "Nacional Library of Medicine". Magnetic Resonance in Medicine. 8 (3): 241–247. doi:10.1002/mrm.1910080302. PMID 3205154. S2CID 27033545. Retrieved 3 March 2023.