TERAHERTZ SPECTROSCOPIC INVESTIGATION OF SALICYLIC ACID AND SODIUM SALICYLATE | |
Ding, L.1,2; Fan, W. -H.1; Song, C.1,2; Chen, X.1,2; Chen, Z. -Y.1,2 | |
刊名 | JOURNAL OF APPLIED SPECTROSCOPY |
2019-01 | |
卷号 | 85期号:6页码:1143-1150 |
关键词 | terahertz spectrum density functional theory intermolecular interactions intramolecular vibrations |
ISSN号 | 0021-9037;1573-8647 |
DOI | 10.1007/s10812-019-00773-w |
产权排序 | 1 |
英文摘要 | The terahertz spectra of salicylic acid and sodium salicylate are measured by broadband terahertz time-domain spectroscopy (THz-TDS). Two absorption features of salicylic acid and three characteristic features of sodium salicylate are reported for the first time. Our investigation shows that salicylic acid and sodium salicylate can be easily distinguished based on their distinctive THz spectra, which could be attributed to their intra- and intermolecular structure differences. Furthermore, solid-state density functional theory calculations reveal that the absorption features of salicylic acid mainly originate from intermolecular interactions, except for the absorption feature at 2.28 THz, while gaseous-state theory calculations show that the absorption features of sodium salicylate mainly come from intramolecular vibrations except for the absorption feature at 0.40 THz. Our investigation indicates that THz vibrational modes are highly sensitive to molecular structures and intermolecular interactions, promoting the application of THz spectroscopy in distinguishing chemicals and pharmaceuticals with similar molecular structures. |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:000463906800025 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/31377] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Fan, W. -H. |
作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Ding, L.,Fan, W. -H.,Song, C.,et al. TERAHERTZ SPECTROSCOPIC INVESTIGATION OF SALICYLIC ACID AND SODIUM SALICYLATE[J]. JOURNAL OF APPLIED SPECTROSCOPY,2019,85(6):1143-1150. |
APA | Ding, L.,Fan, W. -H.,Song, C.,Chen, X.,&Chen, Z. -Y..(2019).TERAHERTZ SPECTROSCOPIC INVESTIGATION OF SALICYLIC ACID AND SODIUM SALICYLATE.JOURNAL OF APPLIED SPECTROSCOPY,85(6),1143-1150. |
MLA | Ding, L.,et al."TERAHERTZ SPECTROSCOPIC INVESTIGATION OF SALICYLIC ACID AND SODIUM SALICYLATE".JOURNAL OF APPLIED SPECTROSCOPY 85.6(2019):1143-1150. |
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