|
|
|
|
|
|
| Polarizability Measurements for Salicylic Acid Embedded in Polymer Matrix Using Terahertz Time-Domain Spectroscopy |
| ZHANG Tian-yao1,2, ZHANG Zhao-hui1*, ZHAO Xiao-yan1, WEI Qing-yang1, CAO Can1, YU Yang1, LI Ying1, LI Xing-yue1 |
1. Beijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Department of Materials Physics, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
|
|
|
|
Abstract Polarizability acts as an essential property in the design of novel materials. It is of great significance to obtain the dynamic polarizability over terahertz frequencies for substance containing complex intermolecular interactions. The experimental access of the polarizability is based on the accurate determination of its intrinsic dielectric constant. Meanwhile, thecoherent detection scheme of terahertz time-domain spectroscopy (THz-TDS) makes it an ideal alternative for dielectric constants measurements. However, most organic crystalline materials occupy strong absorption features over terahertz frequencies, and samples for THz characterization are commonly prepared by homogeneously dispersing the analyte within the THz transparent polymer matrix. The application of the dilution matrix makes the dielectric constants of mixture samples measured by the THz-TDS cannot be directly utilized to calculate the polarizability. We proposed in this work a ternary model based on the Landau, Lifshitz and Looyenga (LLL) theory to extract the intrinsic dielectric constants of analyte by removing the dielectric contribution of trapped air and polymer background. The extracted intrinsic dielectric constants can be further used to calculate polarizability combining with the Clausius-Mossotti equation. The proposed methodology is exemplified in detail with the polarizability determination of crystalline salicylic acid (SA) embedded in twopolymer matrixpolyethylene (PE) and polytetrafluoroethylene (PTFE), respectively. Mixture pellets at three concentrations are designed for THz-TDS measurement for each polymer matrix. The application of the proposed method on the original dielectric spectra of mixture pellets provides intrinsic dielectric constants and polarizability values of salicylic acid with promising consistency. The results reported in this work also represent the first experimentally measured polarizability values for crystalline salicylic acid, which is (17.2±0.2) and (17.6±1.0) Å3 for analyte embedded in PE and PTFE respectively.
|
|
Received: 2020-07-20
Accepted: 2020-11-15
|
|
|
|
Corresponding Authors:
ZHANG Zhao-hui
E-mail: zhangzhaohui@ustb.edu.cn
|
|
[1] Zhang T, Zhang Z, Arnold M A. Applied Spectroscopy, 2019, 73(3): 253.
[2] Cao C, Zhang Z, Zhao X, et al. Optical and Quantum Electronics, 2020, 52(4): 225.
[3] Vieweg N, Shakfa M K, Koch M. Journal of Infrared, Millimeter, and Terahertz Waves, 2011, 32(12): 1367.
[4] Nickel D V, Garza A J, Scuseria G E, et al. Chemical Physics Letters, 2014, 592: 292.
[5] Ravagli A, Naftaly M, Craig C, et al. Optical Materials, 2017, 69: 339.
[6] Zhang T, Zhang Z, Zhao X, et al. Applied Optics, 2020, 59(16): 4775.
[7] ZHANG Tian-yao, ZHANG Zhao-hui, et al（张天尧，张朝晖，等）. Spectroscopy and Spectral Analysis（光谱学与光谱分析）, 2019, 39(6): 1689.
[8] Hernandez-Cardoso G, Singh A, Castro-Camus E. Applied Optics, 2020 59(13), D6.
[9] Groom C R, Bruno I J, Lightfoot M P, et al. Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 2016, 72(2): 171.
[10] Sundaralingam M, Jensen L H. Acta Crystallographica, 1965, 18(6): 1053.
[11] Scheller M. Journal of Infrared, Millimeter, and Terahertz Waves, 2014, 35(8): 638.
[12] Ding L, Fan W H, Song C, et al. Journal of Applied Spectroscopy, 2019, 85(6): 1143. |
| [1] |
WANG Yuan1, ZHANG Zhen2*, GUO Yuan2, 3. A Simplified Method of Microscopic Polarizability Tensor Differential of Hyper-Raman Spectroscopy Based on Experimental Correction Bond Additivity Model-C2v Symmetry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(01): 124-129. |
| [2] |
BAI Jun-peng1, 2, LI Bin1*, ZHANG Shu-juan2, CHEN Yi-mei1. Study on Norfloxacin Concentration Detection Based on Terahertz Time Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(09): 2710-2716. |
| [3] |
LIU Cui-ling1, YANG Yu-fei1*, TIAN Fang2, WU Jing-zhu1, SUN Xiao-rong1. Study on Quantitative Analysis of Edible Oil Peroxide Value by Terahertz Time Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(05): 1387-1392. |
| [4] |
CHEN Meng-qiu1, HE Ming-xia1*, LI Meng2, QU Qiu-hong2. Application of Interval Selection Methods in Quantitative Analysis of Water Content in Engine Oil by Terahertz Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(05): 1393-1397. |
| [5] |
YU Xiao1, YANG Fan1, DING Xue-fei2. Investigation of the Influence of Water Content in Skin Tissue on Terahertz Spectral Parameters[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(03): 835-841. |
| [6] |
WANG Pu1, HE Ming-xia1*, LI Meng2, QU Qiu-hong2, LIU Rui3, CHEN Yong-de4. Application of Terahertz Spectroscopy in the Detection of Bioactive Peptides[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(09): 2696-2701. |
| [7] |
WANG Yuan1, ZHANG Zhen2*, GUO Yuan2, 3. A Simplified Method of Microscopic Hyperpolarizability of Coherent Anti-Stokes Raman Spectroscopy and Coherent Anti-Stokes Hyper-Raman Spectroscopy-C3v Symmetry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(05): 1382-1387. |
| [8] |
ZHANG Hong-run, JI Hong-yu, ZHAO Ping, LIN Gao-zhao, WANG Fu-he, ZHANG Bo*, SHEN Jing-ling*. Study on Ultraviolet Light-Induced Metal Wire-Grid Polarizer in Terahertz Frequency Range[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(07): 2040-2045. |
| [9] |
ZHANG Tian-yao1, 2, 3, ZHANG Zhao-hui1, 2*, Arnold Mark A.3. Dielectric Analysis of Polymeric Materials and Mixtures Using Terahertz Time Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(06): 1689-1694. |
| [10] |
LENG Wen-xiu, MENG Zhao-hui, BAO Ri-ma. Spectroscopy Studies on Quartz Sand-Polyethylene Hybrid Systemin the Terahertz Range[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(06): 1695-1699. |
| [11] |
ZHANG Dong-yu1, 2, PENG Xiao-yu1*, TANG Fu1, DU Hai-wei1, LUO Chun-hua2*. Single-Shot Terahertz Time Domain Spectroscopy Techniques[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(05): 1377-1385. |
| [12] |
WANG Yuan1, ZHANG Zhen2*, GUO Yuan2, 3. A Simplified Method of Microscopic Hyperpolarizability of Coherent Anti-Stokes Raman Spectroscopy and Coherent Anti-Stokes Hyper-Raman Spectroscopy-C∞v Symmetry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(02): 465-470. |
| [13] |
GUAN Ai-hong1,2, LI Zhi1,2, GE Hong-yi1,2. The Qualitative and Quantitative Detection of Potassium Alum in Sweet Potato Starch Based on Terahestz Time-Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(01): 267-270. |
| [14] |
LENG Wen-xiu, ZHAN Hong-lei, GE Li-na. Optical Analysis of Two-Component Alkane Mixtures Based on Terahertz Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(07): 2010-2013. |
| [15] |
SHANG Hui-ning, QUAN Wei*, CHEN Yao, LI Yang, LI Hong . The Measuring Method of Atomic Polarization of Alkali Metal Vapor Based on Optical Rotation and the Analysis of the Influence Factors [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(02): 305-309. |
|
|
|
|
