307307-43-3

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• 55779-26-5 2-(3',3'-dimethyl-6-nitro-3'-H-spiro[chromene-2,2'-indol]-1'-yl)propanoic acid 
• 14691-88-4 4-amino-2,2,6,6-tetramethyl-1-piperidine-1-oxyl 
• 307307-41-1 C₃₀H₃₇N₄O₅ 

Relevant academic research and scientific papers

Preparation and properties of photo-functional systems with nitroxide radicals

Series of TEMPO-substituted norbornadiene, spiropyran and anthracene derivatives have been prepared; their light-induced structural change to the corresponding qudricyclanes, merocyanines or anthracene-dimers and the reverse reactions to the starting materials have been studied. The antiferromagnetic or ferromagnetic behavior observed in norbornadienes/anthracenes was found to be preserved in the corresponding quadricyclanes/anthracene-dimers in spite of the difference of their Weiss temperatures, whereas switching of the intermolecular magnetic interactions was observed in spiropyran/merocyanine systems.

Novel photo-responsive organic spin systems: Preparation and properties of norbornadienes and spiropyrans with TEMPO radical substituents

Several photo-responsive norbornadiene as well as spiropyran derivatives with TEMPO radical substituents were prepared and their light-induced structural changes to the corresponding quadricyclanes or merocyanine dyes and reverse reactions to the starting materials were investigated. While the intermolecular magnetic interactions tend to be preserved in norbornadiene-quadricyclane systems in spite of the differences of their Weiss temperatures, a switching of the intermolecular magnetic interactions was observed in the spiropyran-merocyanine systems.