Femtosecond pump-probe experiments on trapped flavin: Optical control of dissociation
Femtosecond pump-probe experiments on trapped flavin: Optical control of dissociation
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DOI：
10.1063/1.2828558
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发表时间：
2008-02-21
影响因子：
4.4
通讯作者：
Dugourd, Philippe
中科院分区：
文献类型：
--
作者：
Guyon, Laurent;Tabarin, Thibault;Dugourd, Philippe
飞秒泵浦-探测实验在离子阱中分离的黄素生物分子上进行。光诱导碎片的质谱表明，裂解途径可以修改使用双色双光子激发。特别地，当在第一激发步骤（在405 nm激发黄素单甘肽的S-1状态）之后添加红外探测脉冲（810 nm）时，光色素和光黄素产生之间的分支比相对于单激发情况反转。
Femtosecond pump-probe experiments are performed on flavin biomolecules isolated in an ion trap. Mass spectra of the photoinduced fragments show that the fragmentation pathways can be modified using two-color two-photon excitation. In particular, when an infrared probe pulse (810 nm) is added subsequent to the first excitation step (excitation of the S-1 state of flavin mononucleotide at 405 nm), branching ratios between lumichrome and lumiflavin production are inverted relative to the single excitation case.