Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Terahertz study of L-asparagine and its monohydrate | |
| Yang, JQ; Li, SX; Zhao, HW; Zhang, JB; Yang, N; Jing, DD; Wang, CY; Han, JG; zhaohongwei@sinap.ac.cn; jiaghan@tju.edu.cn | |
| 2014 | |
| Source Publication | ACTA PHYSICA SINICA
 |
| ISSN | 1000-3290 |
| Volume | 63Issue:13 |
| Abstract | Low-frequency collective vibrational modes of biomolecules which often lie in terahertz (THz) band, make the terahertz time-domain spectroscopy (THz-TDS) an important technique for molecular identification and medicine quality inspection. Distinctive THz spectra between L-asparagine and its monohydrate were observed and the dehydration process of L-asparagine monohydrate was tracked by THz-TDS. Experiments indicate that THz wave is sensitive to phase transitions in crystals, dehydration process, and weak molecular interactions. Multi-techniques including differential scanning calorimetry and thermogravimetry, Fourier transform infrared spectroscopy, and powder X-ray diffraction are performed to investigate the thermodynamic properties, intermolecular and intramolecular vibrations, and molecular packing patterns of L-asparagine and its monohydrate. These measurements support the reliability of THz spectroscopy. To simulate and analyse the vibration modes of L-asparagine monohydrate, density functional theory calculations are performed using a Perdew Burke and Ernzerhof generalized gradient approach; the results agree well with the experimental observations. |
| Keyword | Time-domain Spectroscopy Density-functional Theory Solid-state Vibrational-modes Amino-acids Spectra Relaxation |
| Indexed By | SCI |
| Language | 中文 |
| WOS ID | WOS:000338765700013 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/14476 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Corresponding Author | zhaohongwei@sinap.ac.cn; jiaghan@tju.edu.cn |
| Recommended Citation GB/T 7714 | Yang, JQ,Li, SX,Zhao, HW,et al. Terahertz study of L-asparagine and its monohydrate[J]. ACTA PHYSICA SINICA,2014,63(13). |
| APA | Yang, JQ.,Li, SX.,Zhao, HW.,Zhang, JB.,Yang, N.,...&jiaghan@tju.edu.cn.(2014).Terahertz study of L-asparagine and its monohydrate.ACTA PHYSICA SINICA,63(13). |
| MLA | Yang, JQ,et al."Terahertz study of L-asparagine and its monohydrate".ACTA PHYSICA SINICA 63.13(2014). |
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| Terahertz study of L（4434KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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