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Collective vibrational modes in biological molecules investigated by terahertz time‐domain spectroscopy
Abstract
We present well‐resolved absorption spectra of biological molecules in the far‐IR (FIR) spectral region recorded by terahertz time‐domain spectroscopy (THz‐TDS). As an illustrative example we discuss the absorption spectra of benzoic acid, its monosubstitutes salicylic acid (2‐hydroxy‐benzoic acid), 3‐ and 4‐hydroxybenzoic acid, and aspirin (acetylsalicylic acid) in the spectral region between 18 and 150 cm−1. The spectra exhibit distinct features originating from low‐frequency vibrational modes caused by intra‐ or intermolecular collective motion and lattice modes. Due to the collective origin of the observed modes the absorption spectra are highly sensitive to the overall structure and configuration of the molecules, as well as their environment. The THz‐TDS procedure can provide a direct fingerprint of the molecular structure or conformational state of a compound. © 2002 Wiley Periodicals, Inc. Biopolymers (Biospectroscopy) 67: 310–313, 2002
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Citations
Cited by
Baxter, J. B., & Guglietta, G. W. (2011) · Analytical Chemistry · doi:10.1021/ac200907z · Cited by 477
Noncovalent intermolecular forces in polycrystalline and amorphous saccharides in the far infrared
Walther, M., Fischer, B. M., & Uhd Jepsen, P. (2003) · Chemical Physics · doi:10.1016/s0301-0104(03)00031-4 · Cited by 369
Self-citationApplications of terahertz spectroscopy to pharmaceutical sciences
Taday, P. F. (2004) · Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences · doi:10.1098/rsta.2003.1321 · Cited by 239
Terahertz pulsed imaging and spectroscopy for biomedical and pharmaceutical applications
Wallace, V. P., Taday, P. F., Fitzgerald, A. J., Woodward, R. M., Cluff, J., Pye, R. J., & Arnone, D. D. (2004) · Faraday Discussions · doi:10.1039/b309357n · Cited by 160
Improved sample characterization in terahertz reflection imaging and spectroscopy
Huang, S., Ashworth, P. C., Kan, K. W., Chen, Y., Wallace, V. P., Zhang, Y.-T., & Pickwell-MacPherson, E. (2009) · Optics Express · doi:10.1364/oe.17.003848 · Cited by 96
Metadata
- Authors
- Walther, M., Plochocka, P., Fischer, B., Helm, H., & Uhd Jepsen, P.
- Venue
- Biopolymers
- Publisher
- Wiley
- Published
- 2002-01
- Volume
- 67
- Issue
- 4-5
- Pages
- 310-313
- ISSN
- 0006-3525 (ISSN-L)
- 1097-0282
- OpenAlex
- W2148909161
- Cited by
- 324
- References
- 0
- FWCI
- 15.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- Walther, M., Plochocka, P., Fischer, B., Helm, H., & Uhd Jepsen, P. (2002). Collective vibrational modes in biological molecules investigated by terahertz time‐domain spectroscopy. Biopolymers. https://doi.org/10.1002/bip.10106
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