Photoactive transition metal complexes - from fundamentals to applications

光活性过渡金属配合物 - 从基础到应用

• 批准号: 1790562
• 金额: --
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1790562
• 关键词: Photoactive; transition; metal; complexes; fundamentals

Photoactive transition metal complexes have attracted interest for many decades. Because of the presence of metal ions, d-orbitals can be involved in photophysical and photochemical processes and present fundamental interests, as these are different from what is occurring in purely organic photoactive compounds. Over the years, such research has resulted in the use of photoactive transition metal complexes in a wide range of technological applications such as solar cells, photocatalysis for organic synthesis, displays, lighting, sensing, bioimaging, anti-cancer therapies, etc.The project has for main objective the study of the non-radiative states of such materials. Indeed, while the radiative state has gathered the most interest over the years, the overall photophysical properties of the complexes are very dependent on the non radiative processes. To achieve this, the initial stages of the project will focus on preparing and studying the early photophysical processes in homologous series of complexes build around archetypal complexes. Through collaborations, recently developed techniques for studying photophysical properties at the fs-scale will be used to revisit the known materials and obtained understanding of these ultrafast processes throughout the homologous series.This new knowledge will then be used to study in details a particular class of emissive complexes recently developed in the group (unpublished) in which a large distortion of the excited state results in improved emissive properties. This is very unusual as a large deformation of the molecule in the excited state results in general in potential energy surfaces crossings and very efficient non radiative deactivation. The question is then: why a chemical design which should result, based on current knowledge, in very competitive non radiative processes leads in fact to very uncompetitive non radiative processes?This fundamental research is expected to provide a new and more complete understanding of the photophysical processes in organometallic complexes and allows for the design of improved materials for a range of applications across the EPSRC remit such as materials for energy (efficiency, sustainability ,and replacement of scarce elements), organic synthesis (through photocatalysis), and medical applications (e.g. sensing and photodynamic therapy).

光活性过渡金属复合物已吸引了数十年的兴趣。由于金属离子的存在，D轨道可以参与光物理和光化学过程并具有基本兴趣，因为它们与纯粹有机光活性化合物中发生的不同。多年来，此类研究导致在多种技术应用中使用光活性过渡金属复合物，例如太阳能电池，有机合成的光催化，显示，显示，照明，感应，感应，生物成像，抗癌疗法等。该项目具有主要目的的非辐射状态的主要目标。确实，尽管辐射状态在多年来收集最大的兴趣，但复合物的总体光物理特性非常依赖于非辐射过程。为了实现这一目标，该项目的初始阶段将着重于在围绕原型复合体围绕同源复合物系列中的早期发射过程准备和研究。通过合作，最近开发的用于研究FS尺度上的光物理特性的技术将用于重新审视已知的材料，并了解整个同源系列中这些超快过程的了解。然后，将使用此新知识来详细研究，详细研究了该类别的特定类别的Emissive consefterial the Extiftion the Entiftial Imissive proporties的特定型号的复杂综合体，该类别是在该组中开发的特定知识。这是非常不寻常的，因为在激发态中分子的大变形总体上会导致势能表面交叉点和非常有效的非辐射失活。问题是：为什么在非常有竞争性的非辐射过程中应基于当前知识产生的化学设计导致实际上是非常非竞争性的非辐射过程？这项基础研究有望提供一个新的，更完整的理解，对有机金属络合物中的光物理过程提供了一个新的，更完整的理解，并允许在Epsrc repiit and Eppsrc的材料中置于范围的材料（例如，均具有诸如Epsrc的材料的材料），例如，（又可以为Epsrc的材料设计（范围）（例如），例如，（例如，均具有诸如Epsrc的材料（范围）（范围）元素），有机合成（通过光催化）和医学应用（例如感应和光动力疗法）。