Odd-electron pi-systems with paramagnetic metal centres as molecular magnets

以顺磁性金属中心作为分子磁体的奇电子 pi 系统

• 批准号: 2714540
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2714540
• 关键词: Odd; electron; pi; systems; paramagnetic

The invention of molecular magnets makes it possible to craft atomically-precise magnetic systems, including molecular equivalents of 'regular-life'-sized magnets. Molecular magnetic compounds are used in medical imaging where they are employed as MRI contrast agents and are routinely used to visualise the structure of internal organs and other bodily structures, as well as tumours. Molecular magnetic clusters also find application in cryogenics, where demagnetisation-magnetisation cycles allows entropy-driven heat absorption. This can be used to cool systems to the microkelvin regime - to millionths of a degree above absolute zero.A more futuristic application of molecular magnetic systems is in quantum computing, which requires controlled organisation of and communication between 'quantum units'. One example of such quantum units is the atoms of specific elements, e.g. copper. These copper atoms act as tiny magnets. Just as a magnetic field is generated by an ordinary sized magnet, the atoms generate their own magnetic field. The direction of the magnetic field generated by each copper atom can change direction in an absolute sense (e.g. it can go from 'up' to 'down'). If two or more 'quantum units' are coupled in series, the direction of the magnetic field associated with each atom can also change direction in a relative sense - in comparison with other nucleus-contingent magnetic fields. The aim of this project is to design and synthesise molecular frameworks which allow simultaneous communication between the magnetic fields generated by nuclei coupled in series. Systematic comparison of the capacity of different molecular frameworks to mediate communication between these atom-contingent magnetic fields across different length scales will afford fundamental understanding of how these interactions occur. This new understanding can be applied to the synthesis of better molecular frameworks for quantum computing applications.This project falls within the EPSRC physical sciences research area. This project will be under the supervision of Professor Harry L. Anderson (Chemistry, Oxford) and Professor Lapo Bogani (Materials, Oxford) in collaboration with Professor Christiane Timmel (Chemistry, Oxford).

分子磁体的发明使制造原子精度的磁性系统成为可能，包括“常规生活”大小的分子等效磁体。分子磁性化合物用于医学成像，它们被用作MRI造影剂，通常用于可视化内部器官和其他身体结构以及肿瘤的结构。分子磁性团簇在低温学中也有应用，其中消磁-磁化循环允许熵驱动的热吸收。这可以用来将系统冷却到微开尔文状态——比绝对零度高百万分之一度。分子磁系统的一个更未来的应用是量子计算，它需要控制“量子单元”之间的组织和通信。这种量子单位的一个例子是特定元素的原子，例如铜。这些铜原子就像微小的磁铁。正如磁场是由一块普通大小的磁铁产生的一样，原子也会产生它们自己的磁场。每个铜原子产生的磁场方向可以在绝对意义上改变方向（例如，它可以从“上”到“下”）。如果两个或多个“量子单位”串联耦合，与其他核偶发磁场相比，与每个原子相关的磁场方向也可以在相对意义上改变方向。该项目的目的是设计和合成分子框架，使原子核串联产生的磁场之间能够同时通信。系统地比较不同分子框架在不同长度尺度上介导这些原子偶然磁场之间通信的能力，将提供对这些相互作用如何发生的基本理解。这一新的认识可以应用于量子计算应用中更好的分子框架的合成。该项目属于EPSRC物理科学研究领域。该项目将由Harry L. Anderson教授（牛津大学化学学院）和Lapo Bogani教授（牛津大学材料学院）与Christiane Timmel教授（牛津大学化学学院）合作指导。