Title :
Determination of relaxation time of DNA hydration water by THz-TDS
Author :
Son, Heyjin ; Choi, Da-Hye ; Jung, Seonghoon ; Park, Jaehun ; Park, Woong-Yang ; Kwon, Oh Sang ; Park, Gun-Sik
Author_Institution :
Dept. of Phys. & Astron., Seoul Nat. Univ., Seoul, South Korea
Abstract :
Interaction of DNA and hydration water affects both structure and function of DNA. Here, we find out the relaxation time of DNA hydration water probed by THz-TDS under biological condition. Double Debye relaxation model is applied for figuring out relaxation time of hydration water. We observed 14.9ps for 50mM of DNA solution. This is much slower compared to bulk water, 8.15ps. The results indicate the existence of slow hydration water around DNA.
Keywords :
DNA; molecular biophysics; molecular configurations; solvation; terahertz wave spectra; water; DNA function; DNA hydration water; DNA structure; DNA-hydration water interaction; H2O; THz-TDS; double Debye relaxation model; relaxation time determination; slow hydration water; time 14.9 ps; Biological system modeling; DNA; Dielectric constant; Educational institutions; Fitting; Molecular biophysics;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380182
