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Infrared Spectroscopy as a Probe of Electronic Energy Transfer
The Journal of Physical Chemistry Letters ( IF 5.7 ) Pub Date : 2018-05-31 00:00:00 , DOI: 10.1021/acs.jpclett.8b01216
Valeriu Scutelnic 1 , Antonio Prlj 2 , Aleksandra Zabuga 1 , Clémence Corminboeuf 2 , Thomas R. Rizzo 1
Affiliation  

We have combined electronic and vibrational spectroscopy in a cryogenic ion trap to produce highly resolved, conformer-selective spectra for the ground and excited states of a peptide containing two chromophores. These spectra permit us to determine the precise three-dimensional structure of the peptide and give insight into the migration of the electronic excitation from phenylalanine to tyrosine because changes in the excited-state infrared spectra are sensitive to localization of the electronic energy in each chromophore. The well-controlled experimental conditions make this result a stringent test for theoretical methods dealing with electronic energy transfer.

中文翻译:

红外光谱作为电子能量转移的探针

我们在低温离子阱中结合了电子和振动光谱,以产生高度分辨的,构象选择性光谱,用于包含两个生色团的肽的基态和激发态。这些光谱使我们能够确定肽的精确三维结构,并深入了解电子激发从苯丙氨酸向酪氨酸的迁移,因为激发态红外光谱的变化对每个生色团中电子能量的定位都很敏感。良好控制的实验条件使该结果成为处理电子能量转移的理论方法的严格测试。
更新日期:2018-05-31
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