Blake Alexander J, Donamaría Rocío, Lippolis Vito, López-de-Luzuriaga José M, Monge Miguel, Olmos María E, Seal Alexander, Weinstein Julia A
School of Chemistry , University of Nottingham , University Park , Nottingham NG7 2RD , U.K.
Departamento de Química , Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Complejo Científico-Tecnológico , Logroño 26004 , Spain.
Inorg Chem. 2019 Apr 15;58(8):4954-4961. doi: 10.1021/acs.inorgchem.8b03621. Epub 2019 Feb 22.
In this paper, we describe experimental evidence of a change in the emission energy as a function of the Au-Au distance. We have employed a luminescent complex exhibiting an aurophilic interaction, which is weak enough to allow its length to be modified by external pressure but rigid enough to confer structural stability on the complex. By determining the crystal structures and emission characteristics over a range of pressures, we have identified an exponential relationship between the energy of the emitted light and the metal-metal distances under pressure. This result can be indirectly related to the repulsive branch of the fitted function representing the energy of the system in the ground state at different Au-Au distances. The relativistic nature of gold appears to play an important role in the behavior of this complex.
在本文中，我们描述了发射能量随金-金距离变化的实验证据。我们使用了一种表现出亲金相互作用的发光配合物，这种相互作用足够弱，以至于其长度可以通过外部压力进行改变，但又足够刚性，能够赋予配合物结构稳定性。通过测定一系列压力下的晶体结构和发射特性，我们确定了发射光的能量与压力下金属-金属距离之间的指数关系。该结果可以间接地与表示不同金-金距离下基态系统能量的拟合函数的排斥分支相关。金的相对论性质似乎在该配合物的行为中起着重要作用。
