Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofisica Aplicada y Alimentos, CIBAAL), National University of Santiago del Estero and CONICET, RN 9, Km 1125, 4206 Santiago del Estero, Argentina.
Langmuir. 2020 Mar 17;36(10):2644-2653. doi: 10.1021/acs.langmuir.9b03551. Epub 2020 Mar 2.
The lack of carbonyl groups and the presence of ether bonds give the lipid interphase a different water organization around the phosphate groups that affects the compressibility and electrical properties of lipid membranes. Generalized polarization of 1,2-di--tetradecyl--glycero-3-phosphocholine (14:0 diether PC) in correlation with Fourier transform infrared (FTIR) analysis indicates a higher level of polarizability of water molecules in the membrane phase around the phosphate groups both below and above . This reorganization of water promotes a different response in compressibility and dipole moment of the interphase, which is related to different H bonding of water molecules with phosphates (PO) and carbonyl (CO) groups.
脂质双层中羰基的缺乏和醚键的存在使得磷酸基团周围的水分子排列方式与脂质膜的压缩性和电性不同。1,2-二-十四烷基-sn-甘油-3-磷酸胆碱（14:0 二醚 PC）的广义极化与傅里叶变换红外（FTIR）分析相关联，表明在 和 以上，磷酸基团周围的膜相中的水分子具有更高的极化率。这种水分子的重排促进了界面压缩性和偶极矩的不同响应，这与水分子与磷酸（PO）和羰基（CO）基团的不同氢键有关。
