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arXiv 2302.08435physics.chem-ph
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如何寻找具有长寿命电荷迁移的分子?

How to find molecules with long-lasting charge migration?

Alan Scheidegger, Nikolay V. Golubev, Jiří Vaníček

AI总结:

该研究开发了一种高效算法,用于寻找在价电离后表现出长寿命电子相干性和电荷迁移的分子,并通过but-3-ynal和3-oxopropanenitrile分子案例阐明了实现阿托化学应用所需同时满足的关键特性。

摘要:

在特定条件下,分子的电离可能产生电子态的叠加,从而导致超快电子动力学。如果加以控制,这种运动可用于阿托化学应用,但研究表明,由核运动引起的退相干通常在几飞秒内就会发生。我们最近开发了一种高效算法,用于寻找在价电离后表现出长寿命电子相干性和跨分子结构电荷迁移的分子。在此,我们首先解释了为什么but-3-ynal分子是研究这类超快电子动力学的理想候选者。然后,我们以3-oxopropanenitrile分子为例,该分子在三种不同电离场景下均未表现出长寿命电荷迁移,以此说明必须同时满足几个不同特性才能使阿托化学应用成为可能。

英文摘要:

Under certain conditions, the ionization of a molecule may create a superposition of electronic states, leading to ultrafast electron dynamics. If controlled, this motion could be used in attochemistry applications, but it has been shown that the decoherence induced by the nuclear motion typically happens in just a few femtoseconds. We recently developed an efficient algorithm for finding molecules exhibiting long-lasting electronic coherence and charge migration across the molecular structure after valence ionization. Here, we first explain why the but-3-ynal molecule is a promising candidate to study this type of ultrafast electron dynamics. Then, we use the 3-oxopropanenitrile molecule, which does not show long-lasting charge migration in any of three different ionization scenarios, as an example demonstrating that several different properties must be fulfilled simultaneously to make the attochemistry applications possible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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