Interfacial Water Facilitates Energy Transfer by Inducing Extended Vibrations in Membrane Lipids

被引：13

作者：

Mashaghi, Alireza ^{[1
]}

Partovi-Azar, P. ^{[2
]}

Jadidi, Tayebeh ^{[2
]}

Nafari, Nasser ^{[2
]}

Esfarjani, Keivan ^{[3
]}

Maass, Philipp ^{[2
]}

Tabar, M. Reza Rahimi ^{[2
]}

Bakker, Huib J. ^{[1
]}

Bonn, Mischa ^{[4
]}

机构：

[1] FOM Inst AMOLF, NL-1098 XG Amsterdam, Netherlands

[2] Univ Osnabruck, Fachbereich Phys, D-49076 Osnabruck, Germany

[3] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

[4] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2012年 / 116卷 / 22期

关键词：

AB-INITIO;

D O I：

10.1021/jp302478a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the complete assignment of the vibrational spectrum of dipalmitoylphosphatidylcholine (DPPC), which belongs to the most ubiquitous membrane phospholipid family, phosphatidylcholine. We find that water hydrating the lipid headgroups enables efficient energy transfer across membrane leaflets on sub-picosecond time scales. The emergence of spatially extended vibrational modes upon hydration, underlies this phenomenon. Our findings illustrate the importance of collective molecular behavior of biomembranes and reveal that hydrated lipid membranes can act as efficient media for the transfer of vibrational energy.

引用

页码：6455 / 6460

页数：6

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