The Electronic and Magnetic Properties of Small Metal-Benzene Complexes Trapped in Helium Droplets

氦液滴中捕获的小金属苯配合物的电子和磁性

• 批准号: EP/E02808X/1
• 负责人: Anthony Stace
• 金额: $ 47.45万
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FE02808X%2F1
• 关键词: Electronic; Magnetic; Properties; Small; Metal

A major difficulty in studying the physical properties of molecular complexes is their temperature. Complexes are either thermally unstable or have sufficient motion as to make it very hard to assign structure from measurements of their spectra. A very recent development in physical sciences is the use of helium droplets to trap and cool complexes. With a temperature of just 0.38 K above absolute zero, droplets are capable of trapping unstable species and reducing their temperature, which makes analysis of their spectra comparatively simple. In this study we propose to use this approach to investigate complexes between transition metals and benzene, which are seen as models for metal / pi electron interactions at metallic surfaces. Cooling the complexes to 0.38 K will make it possible to identify the nature of the electronic transitions taking place and to use these transitions to establish the magnetic moment of the complex. A combination of laser vaporization and the cold helium droplets will make it possible to study a wide range of otherwise unstable metal/benzene complexes.

研究分子复合物物理性质的一个主要困难是它们的温度。复合物要么是热不稳定的，要么有足够的运动，使得很难从光谱测量中确定其结构。物理科学的一个非常新的发展是使用氦滴来捕获和冷却复合物。由于温度仅高于绝对零度0.38 K，液滴能够捕获不稳定的物质并降低它们的温度，这使得它们的光谱分析相对简单。在这项研究中，我们建议使用这种方法来研究过渡金属和苯之间的配合物，这被视为金属/π电子在金属表面的相互作用的模型。将复合物冷却到0.38 K将使其能够识别发生的电子跃迁的性质，并使用这些跃迁来建立复合物的磁矩。激光蒸发和冷氦滴的结合将使研究广泛的不稳定金属/苯络合物成为可能。

项目成果

Metastable Aluminum Atoms Floating on the Surface of Helium Nanodroplets.

漂浮在氦纳米液滴表面的亚稳态铝原子。

• DOI: 10.1103/physrevlett.114.233401
• 发表时间: 2015
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Jeffs J