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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Ring-opening reaction of a trifluorinated indolylfulgide: mode-specific photochemistry after pre-excitationt
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Ring-opening reaction of a trifluorinated indolylfulgide: mode-specific photochemistry after pre-excitationt

机译：三氟吲哚基富列胺的开环反应：预激发后的模式特异性光化学

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摘要

The ring-opening reaction of a trifluorinated indolylfulgide has been studied as a function of temperature and optical pre-excitation where it was found that reaction times decreased as temperature increased from 10.3 ps at 12 °C to 7.6 ps at 60 °C. Simultaneously, the quantum yields for the ring-opening reaction grew from 3.1% (12 °C) to 5.0% (60 °C). When the reaction was started from a non-equilibrium state generated by a directly preceding ring-closure process, the ring-opening reaction became faster and the quantum efficiency increased by more than a factor of three. Analysis of the experimental results points to mode-specific photochemistry in that the promoting, photochemically active modes of the photoreaction are efficiently excited by the directly preceding ring-closure reaction.
机译：已经研究了三氟吲哚基富马特的开环反应与温度和光学预激励的关系，其中发现反应时间随温度从12°C的10.3 ps降低到60°C的7.6 ps而减少。同时，开环反应的量子产率从3.1％（12°C）增加到5.0％（60°C）。当反应从直接在前的闭环过程中产生的非平衡状态开始时，开环反应变得更快，量子效率提高了三倍以上。对实验结果的分析指出了模式特定的光化学，其中光反应的促进，光化学活性模式被直接在前的闭环反应有效地激发了。

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