Terahertz spectroscopy of water in nonionic reverse micelles  

作　　者：张佳琦 闫玉岳 刘立媛 张伟力 Jiaqi Zhang;Yuyue Yan;Liyuan Liu;Weili Zhang(Centre for Terahertz Waves and College of Precision Instrument and Optoeletronics Engineering,Tianjin University,Tianjin 300072,China;School of Electrical and Computer Engineering,Oklahoma State University,Stillwater,Oklahoma 74078,United States)

机构地区：[1]Centre for Terahertz Waves and College of Precision Instrument and Optoeletronics Engineering,Tianjin University,Tianjin 300072,China [2]School of Electrical and Computer Engineering,Oklahoma State University,Stillwater,Oklahoma 74078,United States

出　　处：《Chinese Optics Letters》2024年第1期128-134,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62175185)。

摘　　要：The dynamics of water within a nanopool of a reverse micelle is heavily affected by the amphiphilic interface.In this work,the terahertz(THz)spectra of cyclohexane/Igepal/water nonionic reverse micelle mixture are measured by THz timedomain spectroscopy and analyzed with two Debye models and complex permittivity of background with volume ratios.Based on the fitted parameters of bulk and fast water,the molar concentration of all kinds of water molecules and hydration water molecule number per Igepal molecule are calculated.We find that slow hydration water has the highest proportion in water when the radius parameterω_(0)<10,while bulk water becomes the main component whenω_(0)≥10.The feature radius ratio of nonhydrated and hydrated water to total water nanopool is roughly obtained from 0.39 to 0.85 with increasingω_(0).

关 键 词：reverse micelle water dynamics THz spectroscopy 

分 类 号：O441.4[理学—电磁学] O661.1[理学—物理]