Gas-Phase Studies of Chromophore Molecules in an Electrostatic Storage Ring
Gas-Phase Studies of Chromophore Molecules in an Electrostatic Storage Ring
复制标题
静电存储环中发色团分子的气相研究
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
S. Nielsen
中科院分区：
文献类型：
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作者：
S. Nielsen
使用静电存储环的研究在气相中的生色团离子的演示。以这种方式，“裸”发色团离子的内在的光物理和光化学没有“干扰”的溶剂化壳被阐明。该环与电喷雾离子源相结合，从而能够产生大分子离子。这里描述的实验涉及蛋白质发色团的吸收光谱和测量的解离过程和激发态的核苷酸和原卟啉离子的寿命。与溶液相实验的比较，使我们能够解决扰动的溶剂或蛋白质环境的发色团的电子结构。
The use of an electrostatic storage ring for the study of chromophore ions in the gas phase is demonstrated. In this way the intrinsic photophysics and photochemistry of “naked” chromophore ions without the “disturbance” of a solvation shell is elucidated. The ring is combined with an electrospray ion source which enables the production of large molecular ions. Experiments described here involve absorption spectroscopy of protein chromophores and measurements of lifetimes for dissociation processes and excited states of nucleotide and protoporphyrin ions. Comparisons with solution phase experiments allow us to address the perturbation of a solvent or a protein environment on the electronic structure of chromophores.