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首页> 外文期刊>Journal of photochemistry and photobiology, C. Photochemistry reviews >Molecular volume and enthalpy changes associated with irreversible photo-reactions
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Molecular volume and enthalpy changes associated with irreversible photo-reactions

机译：与不可逆的光反应有关的分子体积和焓变

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摘要

Enthalpy and volume changes of irreversible chemical reactions were properties that were difficult to access by use of traditional thermodynamical techniques. However, recent developments of several types of spectroscopic methods enable us to measure these quantities for a variety of irreversible reactions. The principles of three experimental methods, specifically, the photoacoustic (PA), transient grating (TG) and transient lens (TrL) methods are explained, and their characteristic points are compared in detail. Enthalpy and volume changes associated with various photochemical reactions (photodissociation reactions, photoisomerization reactions, photoinduced proton-releasing reactions, electron transfer processes) and creation of the excited states of organic molecules in solution phase are reviewed, and these properties are discussed.
机译：不可逆化学反应的焓和体积变化是使用传统热力学技术难以获得的特性。但是，几种类型的光谱方法的最新发展使我们能够测量各种不可逆反应的数量。解释了三种实验方法的原理，分别是光声（PA），瞬态光栅（TG）和瞬态透镜（TrL）方法，并比较了它们的特征点。审查了与各种光化学反应（光解离反应，光异构化反应，光诱导的质子释放反应，电子转移过程）相关的焓和体积变化以及溶液相中有机分子激发态的产生，并讨论了这些性质。

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