Controlling Spin-Exchange Coupling and Energy Transfer at the Organic-Lanthanide Nanoparticle Interface

控制有机-镧系元素纳米粒子界面的自旋交换耦合和能量转移

• 批准号: 2482376
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2482376
• 关键词: Controlling; Spin; Exchange; Coupling; Energy

Our recent demonstration that it is possible to control molecular triplet dynamics by coupling organic molecules to lanthanide-doped inorganic insulating nanoparticles (Han et al, Nature 2020), opens new possibilities for the application of these nanosystems in applications in optoelectronics, photon frequency conversion, bio-medical imaging and photocatalysis. This project will explore the fundamental mechanisms of spin-exchange Coupling and energy transfer between the spin-one molecular triplet states and the lanthanide ions. Key to gaining mechanistic insights is the precise control of the interface between the molecules and the lanthanide nanoparticles. To achieve this molecular ligands will be designed and synthesized in the Bronstein Group (Chemistry), to control the length scales and molecular orientation of the wavefunctions at these interfaces. The self-assembly of these ligands will be characterised with techniques including FTIR, NMR and neutron scattering. The photophysical and spin properties of the system will then be studied via steady-state and time resolved spectroscopy in the Rao Group (Physics). We seek to understand the fundamental nature of wavefunctions in these newly discovered systems and then use the insights gained in device applications including systems for photon up and down conversion, imaging and photocatalysis.

我们最近的证明是，可以通过将有机分子耦合到掺杂型灯笼的无机绝缘纳米颗粒（Han等，Nature 2020）来控制分子三联动力学，为这些纳米系统在Optoelectronics中应用中应用在应用中应用这些纳米系统的应用开辟了新的可能性。该项目将探讨自旋交换耦合和旋转一个分子三重态和灯笼离子之间的能量转移的基本机制。获得机理见解的关键是分子和灯笼纳米颗粒之间界面的精确控制。为了实现该分子配体，将在布朗斯坦组（化学）中设计和合成，以控制这些接口处的波形的长度尺度和分子取向。这些配体的自组装将以FTIR，NMR和中子散射在内的技术来表征。然后，将通过RAO组（Physics）中的稳态和时间分析光谱研究来研究系统的光物理和自旋特性。我们试图了解这些新发现的系统中波形的基本性质，然后使用在设备应用中获得的见解，包括用于上下的光子上下转换，成像和光催化的系统。