Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2012, Vol. 23 ›› Issue (4): 252-256 doi: 10.13538/j.1001-8042/nst.23.252-256

• INTERDISCIPLINARY STUDIES • Previous Articles    

Promoting effect of ethanol on dewetting transition in the confined region of melittin tetramer

REN Xiuping(1,2) ZHOU Bo(1,2) WANG Chunlei1   

  1. 1 Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China 2 Graduate School of the Chinese Academy of Sciences,Beijing 100080,China
REN Xiuping, ZHOU Bo, WANG Chunlei. Promoting effect of ethanol on dewetting transition in the confined region of melittin tetramer.Nuclear Science and Techniques, 2012, 23(4): 252-256     doi: 10.13538/j.1001-8042/nst.23.252-256

Abstract:

To study the influence of ethanol molecules on the melittin tetramer folding,we investigated the dewetting transition of the melittin tetramer immersed in pure water and 8%aqueous ethanol solution(mass fraction) by the molecular dynamics simulations.We found that the marked dewetting transitions occurred inside a nanoscale channel of the melittin tetramer both in pure water and in aqueous ethanol solution.Also,ethanol molecules promoted this dewetting transition.We attributed this promoting effect to ethanol molecules which prefer to locate at the liquidvapor interface and decrease the liquid-vapor surface energy.The results provide insight into the effect of ethanol on the water dewetting phenomena.

Key words: Dewetting transition, Melittin tetramer, Ethanol, Molecular dynamics simulation