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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Terahertz (Far-Infrared) Characterization of Tris(hydroxymethyl)aminomethane Using High-Resolution Waveguide THz-TDS
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Terahertz (Far-Infrared) Characterization of Tris(hydroxymethyl)aminomethane Using High-Resolution Waveguide THz-TDS

机译：使用高分辨率波导THz-TDS的三（羟甲基）氨基甲烷的太赫兹（远红外）表征

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摘要

Waveguide THz-TDS using metal parallel plate waveguides is employed to obtain a high-resolution terahertz vibrational spectrum of tris(hydroxymethyl)aminomethane, commonly known as Tris or THAM, an important biological buffer component, a neuroinhibitor and an organic thermal energy-storing molecule. Dropcast and sublimated thin films are used to characterize the sample. The development (with cooling) of 3 broad resonances seen at room temperature into 12 highly resolved spectral features for the dropcast sample and 11 features for a sublimated sample at 13.6 K is tracked by measuring the temperature dependence of the transmission spectrum. Resonances with fwhm linewidths as narrow as 12 GHz are obtained. These results provide strong constraints on theoretical modeling.
机译：使用金属平行板波导的波导THz-TDS获得三（羟甲基）氨基甲烷（通常称为Tris或THAM）的高分辨率太赫兹振动光谱，这是重要的生物缓冲成分，神经抑制剂和有机热能存储分子。使用压铸法和升华薄膜来表征样品。通过测量透射光谱的温度依赖性，可以跟踪在室温下观察到的3个宽泛共振的发展（冷却），它们分别形成12个高度分解的光谱特征和13.6 K升华样品的11个特征。获得线宽最窄至12 GHz的谐振。这些结果为理论建模提供了强大的约束。

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