Projects per year
Abstract
We measured crystalline (C-form) saturated fatty acids with even carbon numbers ranging from 12 to 20 using temperature dependent terahertz time-domain spectroscopy (THz-TDS). Absorption features between 0.5 and 3 THz were identified at temperatures from 96 K to 293 K, and a systematic red-shift was obvserved with the increasing carbon chain length. The origins of these absorption bands were uncovered using state-of-the-art ab initio density functional theory (DFT) calculations. Similar vibrational motions in the absorption bands of the different materials highlight the unique role that THz-TDS has for probing weak non-covalent interactions in these materials. Our results showcase the utility of the terahertz region, which is beyond the scope of related vibrational techniques, providing direct evidence of the effect of chain length on the intermolecular interactions of these molecules.
Original language | English |
---|---|
Pages (from-to) | 3670-3673 |
Number of pages | 4 |
Journal | Chemical Communications |
Volume | 55 |
Issue number | 25 |
DOIs | |
Publication status | Published - 28 Mar 2019 |
Projects
- 2 Finished
-
Interrogating protein hydration by terahertz time-domain spectroscopy
Wallace, V., Bond, C., Falconer, R., van der Walle, C. & Taday, P.
1/01/16 → 31/12/18
Project: Research
-
Theoretical modelling of the interaction of THz with hydrated materials
Wallace, V., MacPherson, E. & Gibson, A.
1/01/15 → 31/12/17
Project: Research