10 T Solenoid Magnet

10T电磁铁

• 批准号: 438665545
• 金额: --
• 依托单位: Julius-Maximilians-Universität Würzburg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/438665545?language=en
• 关键词: 10; Solenoid; Magnet

The spin chemistry of radical pairs plays an important role in photosynthesis or in the magnetic compass of birds but also in many optoelectronic devices such as OLEDs.In order to investigate the spin chemistry of charge-separated states in molecular triads and dyads we perform magnetic field dependent time-resolved optical spectroscopy. Several mechanisms account for the spin evolution which possess a characteristic magnetic field dependence. In recent investigations of several triads and dyads we observed a an unexpected pronounced high-field effect which started at much lower field than the known delta-g effect. In order to clarify the origin of this high-field effect we have to perform measurements at much higher field than the 2 T which is the maximum field we can apply currently. For this reason we apply for a 10 T magnet. Only by a detailed characterization extending over large field regions we can elucidate the spin chemistry in the dyads and triads. This is important for better controlling the electron transfer processes in molecular systems and in optoelectronic devices based on these materials.

自由基对的自旋化学在光合作用或鸟类的磁罗盘中发挥着重要作用，而且在许多光电器件（例如 OLED）中也发挥着重要作用。为了研究分子三联体和二联体中电荷分离态的自旋化学，我们进行了磁场相关的时间分辨光谱。有几种机制可以解释具有特征磁场依赖性的自旋演化。在最近对几个三元组和二元组的研究中，我们观察到一种意想不到的显着高场效应，该效应始于比已知的 Delta-g 效应低得多的场。为了澄清这种高场效应的起源，我们必须在比 2 T（我们目前可以应用的最大场）高得多的场下进行测量。为此我们申请了10T磁铁。只有通过大场区域的详细表征，我们才能阐明二元组和三元组中的自旋化学。这对于更好地控制分子系统和基于这些材料的光电器件中的电子转移过程非常重要。