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Synthesis of a new ionic spin probe for investigation of polar and non-polar solvents

✍ Scribed by Veronika Strehmel; Hans Rexhausen; Peter Strauch

Publisher
Elsevier Science
Year
2008
Tongue
French
Weight
174 KB
Volume
49
Category
Article
ISSN
0040-4039

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✦ Synopsis

A synthesis is described for the new ionic spin probe potassium-(18-crown-6)-4-sulfonatooxy-2,2,6,6tetramethyl-piperidine-1-yloxyl. This new spin probe shows an improved solubility in both polar and non-polar solvents in comparison with the potassium-4-sulfonatooxy-2,2,6,6-tetramethylpiperidine-1yloxyl. Furthermore, the solubility of potassium-(18-crown-6)-4-sulfonatooxy-2,2,6,6-tetramethylpiperidine-1-yloxyl is also improved in ionic liquids relative to the potassium salt comprising no crown ether moiety. The spin probe potassium-(18-crown-6)-4-sulfonatooxy-2,2,6,6-tetramethyl-piperidine-1yloxyl is highly suitable for investigation of both less polar and highly polar environments.

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