VISCOSITY AND HYDROPHOBICITY: POLYMER DIFFUSION AT FLUIDIC JANUS INTERFACES
Interfaces where hydrophobicity and hydrophilicity meet are commonly found in nature. The most important case is the cell membranes, which is phosphor lipid bilayers with hydrophobic inner layer stabilized by hydrophilic exteriors in aqueous environment. Such membranes serve as the communication channels between the inner and outer space of the cell and numerous biochemical and physical reaction take place via these membranes. The lateral mobility of biomacromolecules, for example, proteins, at cell membranes is an important issue related to the all of the activities. This brings up the importance of dynamics of amphiphilic macromolecules at fluidic interfaces consist of closely positioned hydrophobicity and hydrophilicity. In this work, we successfully explored the lateral dynamics of a popular amphiphilic polymer, polyethylene oxide (PEO), adsorbed at the water/oil interfaces. By applying single molecule fluorescence microscopy, the lateral diffusion of single PEO chains has been studied at interfaces of water and several alkanes.
Jingfa Yang Jiang Zhao
Joint laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
285-286
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）