论文标题
甘氨酸和其他选定氨基酸的中和远红外光谱的整合摩尔吸收性
Integrated molar absorptivity of mid- and far-infrared spectra of glycine and other selected amino acids
论文作者
论文摘要
选择了五种蛋白质氨基酸，即甘氨酸，异亮氨酸，苯丙氨酸，酪氨酸和色氨酸，在中型和远红外研究，目的是促进这些天文学和天文学相关的分子在太空环境中的搜索和识别。确定了所有中型和远红外带的摩尔灭绝系数（ε）以及综合摩尔吸收率（ψ）。还记录了从-180°C到环境温度到 +200°C的三个不同温度下，还记录了五个选定氨基酸的中红外光谱。我们测量由温度引起的红外带的波长偏移，对于最相关或温度敏感的红外带，确定了一系列线性方程，将波长与温度有关。这样的方程可能会提供一旦在天体物理对象中检测到的这些分子温度的估计，并且在报告的ε和ψ值中，可以估计这些分子在太空环境中的相对丰度。
A selection of five proteinogenic amino acids, namely glycine, isoleucine, phenylalanine, tyrosine and tryptophan were studied in the mid-infrared and in the far-infrared with the purpose to facilitate the search and identification of these astrobiological and astrochemical relevant molecules in space environments. The molar extinction coefficients (ε) of all mid- and far-infrared bands were determined as well as the integrated molar absorptivities (ψ). The mid-infrared spectra of the five selected amino acids were recorded also at three different temperatures from -180°C to ambient temperature to +200°C. We measure the wavelength shift of the infrared bands caused by temperature and, for the most relevant or temperature-sensitive infrared bands, a series of linear equations were determined relating wavelength position with temperature. Such equations may provide estimates of the temperature of these molecules once detected in astrophysical objects and with the reported values of ε and ψ, it will be possible to estimate the relative abundance of these molecules in space environments.
