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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Damped Oscillations in UV -Vis Spectra of Pentazadiene Monomers and Polymers after Laser Photolysis
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Damped Oscillations in UV -Vis Spectra of Pentazadiene Monomers and Polymers after Laser Photolysis

机译：五氮杂二烯单体和聚合物在激光光解后的紫外-可见光谱中的阻尼振荡

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摘要

The photochemical decomposition of substituted 1,5-diaryl-3-alkyl-pentazadiene monomers and polymers induced by UV irradiation with a pulsed excimer laser was monitored by UV - vis spectroscopy. The net photochemical reaction proceeds in an overall one-step pathway A -> B. Quantum yields for the laser decomposition are determined to be <= 10%. An oscillating behavior of the absorption was found during the dark period following the irradiation. The temperature dependence of this dark reaction has been studied. The oscillatory behavior is discussed in the light of current theories concerning instabilities in photochemical systems.
机译：通过紫外-可见光谱法监测通过脉冲准分子激光的紫外线照射诱导的取代的1,5-二芳基-3-烷基-戊二二烯单体和聚合物的光化学分解。净光化学反应在整个一步式路径A→B中进行。激光分解的量子产率确定为<= 10％。在辐射后的暗期中发现吸收的振荡行为。已经研究了这种暗反应的温度依赖性。根据有关光化学系统不稳定性的最新理论讨论了振荡行为。

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