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Dielectric relaxation change of water upon phase transition of a lipid bilayer probed by terahertz time domain spectroscopy.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Choi, Da-Hye Son, Heyjin Jung, Seonghoon Park, Jaehun Park, Woong-Yang Kwon, Oh Sang Park, Gunsik |
| Copyright Year | 2012 |
| Abstract | We investigate the influence of the 1, 2-ditetradecanoyl-sn-glycero-3-phosphocholine lipid bilayer phases on the water reorientation dynamics with terahertz time domain spectroscopy. The phase of the lipids was controlled by the temperature in the range of 14-35 °C. During the gel-to-fluid phase transition, the hydration water ratio drastically changed from 0.3 to 0.6. The absorption coefficient of the hydration water increased with the temperature in the gel phase and then decreased in the fluid phase. The dielectric relaxation time of the lipid solution decreased initially but then increased after the phase transition. This indicates that the hydration water reorientation dynamics are restricted by lipids and that this phenomenon is pronounced in a biologically relevant fluid phase. |
| Starting Page | 175101 |
| Ending Page | 175101 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.4764304 |
| PubMed reference number | 23145747 |
| Journal | Medline |
| Volume Number | 137 |
| Issue Number | 17 |
| Alternate Webpage(s) | http://terahertz.snu.ac.kr/Publications/International%20J/2012.%20Dielectric%20relaxation%20change%20of%20water%20upon%20phase.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.4764304 |
| Journal | The Journal of chemical physics |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
