Photochemical stability and possible routes for photodegradation of twisted diarylnitroxides were determined. It was shown that quantum yields for twisted diarylnitroxides fall in the range typical for the best representatives of alkylnitroxides providing an additional support that twisting of the phenyl ring from the N-O conjugation plane constitutes an efficient route for increasing thermo and photo stability of the nitroxides.

中文翻译：

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扭曲的二芳基硝基氧化物的稳定性：光化学测试

确定了扭曲的二芳基硝基氧化物的光化学稳定性和可能的​​光降解途径。已经表明，扭曲的二芳基硝基氧化物的量子产率落在烷基硝基氧化物的最佳代表的典型范围内，从而提供了额外的支持，即苯环从NO共轭平面的扭曲构成了提高氮氧化物的热稳定性和光稳定性的有效途径。