Investigation of the amino acids glycine, proline, and methionine by photoemission Spectroscopy
Investigation of the amino acids glycine, proline, and methionine by photoemission Spectroscopy
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DOI：
10.1021/jp075384v
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发表时间：
2007-11-01
影响因子：
2.9
通讯作者：
Carravetta, Vincenzo
中科院分区：
文献类型：
--
作者：
Plekan, Oksana;Feyer, Vitaliy;Carravetta, Vincenzo
用真空紫外光和软X射线研究了甘氨酸、脯氨酸和蛋氨酸在气相中的价态和核能级光电子能谱。外价带光电子能谱与已报道的He I谱相似，但由于光子能量的不同，相对峰强度有所不同。我们将光谱范围扩展到包括内价区。碳、氮和。测定了这些氨基酸的氧原子和硫原子的2p核能级光谱，并对其状态进行了鉴定。作为温度的函数记录了脯氨酸的价带光谱，它们提供了关于最低能构象的相对布居的信息。
The valence and core level photoelectron spectra of glycine, proline, and methionine in the gas phase have been investigated by VUV and soft X-ray radiation. The outer valence band photoemission spectra are similar to previously reported He I spectra, although relative peak intensities are different due to the different photon energy. We extended the spectral range to include the inner valence region. The carbon, nitrogen, and. oxygen Is as well as the sulfur 2p core level spectra of these amino acids have been measured and the states identified. Valence band spectra of proline have been recorded as a function of temperature, and they provide information about the relative populations of the lowest energy conformers.