Photostability enhancement of the pentacene derivative having two nitronyl nitroxide radical substituents

Photostability enhancement of the pentacene derivative having two nitronyl nitroxide radical substituents
复制标题

具有两个硝基硝基氧自由基取代基的并五苯衍生物的光稳定性增强

DOI：
10.1039/c5cc09481j
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发表时间：
2016
期刊：
Chem. Commun.
影响因子：
--
通讯作者：
A. Ito and Y. Teki
A. Ito and Y. Teki
中科院分区：
--
文献类型：
--
作者：
A. Shimizu;A. Ito and Y. Teki

文献摘要

相似文献

合成了具有硝基硝基氧自由基取代基的并五苯衍生物（1a和1b），并评估了它们的光化学性质。与并五苯、6,13-​​双(三异丙基甲硅烷基乙炔基)并五苯和单自由基1b相比，具有两个自由基取代基的1a显示出显着增强的光稳定性。这是因为在光激发状态下存在多种失活途径。
Pentacene derivatives possessing nitronyl nitroxide radical substituents (1a and 1b) were synthesized, and their photochemical properties were evaluated. 1a with two radical substituents showed a remarkable enhancement of photostability compared with pentacene, 6,13-bis(triisopropylsilylethynyl)pentacene and the monoradical, 1b. This is understood due to the presence of the multiple deactivation pathways in the photoexcited states.