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首页> 外文期刊>Spectroscopy >Ruthenium trisbipyridine as a candidate for gas-phase spectroscopic studies in a Fourier transform mass spectrometer
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Ruthenium trisbipyridine as a candidate for gas-phase spectroscopic studies in a Fourier transform mass spectrometer

机译：钌三联吡啶在傅里叶变换质谱仪中作为气相光谱研究的候选物

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Metal polypyridines are excellent candidates for gas-phase optical experiments where their intrinsic properties can be studied without complications due to the presence of solvent. The fluorescence lifetimes of [Ru(bpy)3]1+trapped in an optical detection cell within a Fourier transform mass spectrometer were obtained using matrix-assisted laser desorption/ionization to generate the ions with either 2,5-dihydroxybenzoic acid (DHB) or sinapinic acid (SA) as matrix. All transients acquired, whether using DHB or SA for ion generation, were best described as approximately exponential decays. The rate constant for transients derived using DHB as matrix was 4×107s−1, while the rate constant using SA was 1×107s−1. Some suggestions of multiple exponential decay were evident although limited by the quality of the signals. Photodissociation experiments revealed that [Ru(bpy)3]1+generated using DHB can decompose to [Ru(bpy)2]1+, whereas ions generated using SA showed no decomposition. Comparison of the mass spectra with the fluorescence lifetimes illustrates the promise of incorporating optical detection with trapped ion mass spectrometry techniques.
机译：金属多吡啶是气相光学实验的极佳候选物，其中由于溶剂的存在，可以研究其内在特性而不会造成复杂性。使用基质辅助激光解吸/电离以生成带有2,5-二羟基苯甲酸（DHB）的离子，获得在傅立叶变换质谱仪中的光学检测池中捕获的[Ru（bpy）3] 1+的荧光寿命。或以芥子酸（SA）为基质。不管使用DHB还是SA产生离子，所有获得的瞬态都可以最好地描述为近似指数衰减。使用DHB作为矩阵导出的瞬态速率常数为4×107s-1，而使用SA的瞬态速率常数为1×107s-1。尽管受到信号质量的限制，但还是有一些关于多重指数衰减的建议。光解离实验表明，使用DHB生成的[Ru（bpy）3] 1+可以分解为[Ru（bpy）2] 1+，而使用SA生成的离子没有分解。质谱与荧光寿命的比较说明了将光学检测与捕获离子质谱技术结合在一起的希望。

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