期刊
CHEMICAL SOCIETY REVIEWS
卷 46, 期 18, 页码 5536-5550出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cs00112f
关键词
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资金
- European Research Council [ERC-2012-STG_308117]
- Studienstiftung des deutschen Volkes
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.
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