High performance fluorescence lifetime spectrometer

高性能荧光寿命光谱仪

• 批准号: 438990446
• 金额: --
• 依托单位: Universität Bayreuth
• 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/438990446?language=en
• 关键词: performance; fluorescence; lifetime; spectrometer

The requested high-performance fluorescence lifetime spectrometer is to be operated centrally in a room of the Chair of Physical Chemistry III (AG Marschall), and will be available to a wide range of users, including those working on crystalline oxides, coordination compounds, and proteins in the form of powders, thin films and solutions. The device enables measurements for temperature-controlled steady-state as well as transient photoluminescence on all named sample geometries. The device also offers the possibility of excitation for lifetime measurements both in the UV light range (266 nm, 355 nm) and in the visible light range (532 nm) with ultrashort pulses, so that measurements of luminescence lifetimes in the low picosecond range with all three excitation wavelengths are possible. As a result, synthetic material modifications (e.g., band gap reduction by chemical modification of semiconductors, ligand design of coordination compounds) and concomitant altered excitation/recombination/emission can be directly compared by measurements on identical time scales to provide a deeper understanding of the impact on e.g. photocatalytic activity or exchange interactions between luminescent ligands and metal centers.

所要求的高性能荧光寿命光谱仪将在物理化学 III 主席 (AG Marschall) 的房间内集中操作，并将可供广泛的用户使用，包括那些研究晶体氧化物、配位化合物以及粉末、薄膜和溶液形式的蛋白质的用户。该设备能够测量所有指定样品几何形状的温控稳态和瞬态光致发光。该器件还可以在紫外光范围（266 nm、355 nm）和可见光范围（532 nm）中使用超短脉冲进行寿命测量激发，从而可以使用所有三种激发波长在低皮秒范围内测量发光寿命。因此，合成材料的修饰（例如，通过半导体化学修饰减少带隙、配位化合物的配体设计）和伴随的激发/重组/发射的改变可以通过相同时间尺度的测量来直接比较，以更深入地了解对例如光催化活性或发光配体和金属中心之间的交换相互作用。