A solution containing a nitroxide radical for magnetometry by resonance magnetic resonance

摘要

The invention relates to a solution containing a nitroxide radical for magnetometry by nuclear magnetic resonance. This solution is constituted by a nitroxide radical of formula: & br / (see appended drawing in bopi) & br / in which r * * 1, r * * 2, r and r * * * 3 * 4, which may be identical or different, represent an alkyl group or an alkoxy group optionally deuterated, or in which the r * * * * r 1 - 2 and / or r * * * * r 3 - 4 together form a polycycloalkyl or cycloalkyl group optionally deuterated, and n * * * * 14n or 15n dissolved in a solvent having an oxidizing agent and an appropriate viscosity. & br / the solvent may be constituted by a mixture of water and of two compounds acting respectively as the oxidizing agent and of the viscosity modifier, for example, of water, ethylene - glycol and nalo4, or be constituted solely by a mixture of water and of an oxidizing agent capable of modifying the viscosity, such as acetic acid.