Photoswitchable molecules as key ingredients to drive systems away from the global thermodynamic minimum,Chemical Society Reviews

当前位置： X-MOL 学术 › Chem. Soc. Rev. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Photoswitchable molecules as key ingredients to drive systems away from the global thermodynamic minimum
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2017-08-31 00:00:00 , DOI: 10.1039/c7cs00112f
Michael Kathan _{1,

2,

3,

4} , Stefan Hecht _{1,

2,

3,

4}

Affiliation

In order to perform chemical work, molecular systems have to be operated away from thermodynamic equilibrium and therefore require the input of energy. Light is perhaps the most abundant and advantageous energy source that in combination with photoswitches allows for a reversible and hence continuous stimulation of a system. In this review, we illustrate how photoswitchable molecules can be used to escape the global thermodynamic minimum by populating metastable states, from which energy can be transferred and transformed in a controlled fashion. We emphasize the unique feature of photodynamic equilibria, in which population of the states is dictated by the excitation wavelength (and not primarily by temperature), thereby avoiding microscopic reversibility since the photoreaction involves an electronically excited state. Thus, photoswitchable molecular systems can remotely be controlled with high spatial and temporal resolution and in addition their action can be fueled by light.

中文翻译：

光开关分子作为驱动系统远离全球热力学最小值的关键成分

为了执行化学功，分子系统必须远离热力学平衡进行操作，因此需要输入能量。光可能是最丰富，最有利的能源，与光开关结合使用可以对系统进行可逆的连续刺激。在这篇综述中，我们说明了光可转换分子如何通过填充亚稳态来逃逸全局热力学最小值，能量可以受控的方式从中转移和转化。我们强调光动力学平衡的独特特征，其中状态的总体由激发波长（而不是主要由温度）决定，因此避免了微观可逆性，因为光反应涉及电子激发态。因此，

更新日期：2017-09-18

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11