Developments in the photophysics and photochemistry of actinide ions and their coordination compounds
Developments in the photophysics and photochemistry of actinide ions and their coordination compounds
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DOI：
10.1016/j.ccr.2012.03.029
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发表时间：
2012-08-01
影响因子：
20.6
通讯作者：
Natrajan, Louise S.
中科院分区：
文献类型：
--
作者：
Natrajan, Louise S.
锕系元素配位化学目前正在经历一场复兴，出现了令人兴奋的和较少研究的氧化态，以及以前无法预测的磁性和反应性。一方面，锕系元素离子本身是核能生产技术的基础，但从科学的角度来看，人们对它们迷人的物理和化学性质知之甚少，特别是与镧系元素和过渡金属相比。虽然原则上所有的锕系元素（An（n+））和锕基（AnO（2）（n+））离子都是发射性的，但直到最近几年才开始探索相对少量的明确的络合物的发光性质，并利用锕系元素离子的发射性质，例如在铀矿物表面蚀变反应的光学成像中。尽管如此，这些研究代表了这一重要领域的真正进步。本文综述了锕系元素和锕基发光的研究进展，重点介绍了锕系元素及其配位化合物的基本光学性质。讨论的性质的排放，包括分配的电荷转移和5f内的过渡，带的位置，带的形状和排放衰减常数（S），特别注意与核燃料循环，包括分离和补救技术的潜在应用。(C)2012爱思唯尔有限公司版权所有。
Actinide coordination chemistry is currently experiencing a renaissance, with the emergence of exciting and less studied oxidation states, and previously unpredicted magnetic properties and reactivities. On one hand, the actinide ions themselves underpin technologies that result in nuclear power production, yet from a scientific viewpoint their fascinating physical and chemical properties are poorly understood, especially when compared with their lanthanide and transition metal counterparts. Although, in principle, all actinide (An(n+)) and actinyl (AnO(2)(n+)) ions are emissive, it is only in recent years that the luminescence properties of a relatively small number of well defined complexes have begun to be explored and the emission properties of the actinide ions exploited, for example in optical imaging of surface alteration reactions in uranium minerals. Nonetheless, these studies represent a veritable advancement in this important field. In this review, an account of developments in the area of actinide and actinyl luminescence will be presented, focussing on the fundamental optical properties of the ions and their coordination compounds. A discussion of the nature of the emission, including assignments of charge transfer and intra 5f transitions, band position, band shape and emission decay constant(s) is presented, with particular attention on potential applications related to the nuclear fuel cycle, including separation and remediation technologies. (C) 2012 Elsevier B.V. All rights reserved.