Beyond classical theories
Beyond classical theories
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超越经典理论
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Valiev
中科院分区：
文献类型：
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作者：
S. Kathmann;Bernhard Sellner;A. Alexander;M. Valiev
经典成核理论（CNT）和物质的基态绝热描述都教会了我们很多关于成核现象的知识。然而，最近的实验已经证实了发光的存在，在深紫外和可见光区域，在NaCl从溶液中结晶-被称为晶体发光（XTL）。鉴于在实验上探测凝聚相中的潜在成核机制的困难，辐射的发射是引起该发射的化学过程的特征。这打开了使用XTL作为成核机制的精致探针的可能性。电子激发态的成核机制的列入超出了CNT和基态绝热相互作用。在这里，我们概述了与这些发现相关的化学物理，以及它们对我们如何理解和建模成核的影响。
Both Classical Nucleation Theory (CNT) and ground state adiabatic descriptions of matter have taught us a great deal about nucleation phenomena. However, recent experiments have confirmed the existence of luminescence, in both the deep UV and visible regions, during crystallization of NaCl from solution - referred to as crystalloluminescence (XTL). Given the difficulty in experimentally probing the underlying nucleation mechanisms in condensed phases, the emission of radiation is characteristic of the chemical processes giving rise to that emission. This opens the possibility of using XTL as an exquisite probe of nucleation mechanisms. The inclusion of electronically excited states in the nucleation mechanism lies beyond both CNT and ground state adiabatic interactions. Here we outline the chemical physics relevant to these findings and their consequences on how we understand and model nucleation.