期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

水-油界面上聚合物单链的动态性质及疏水相互作用

The lateral diffusion of polymer single chain at oil-water interfaces and hydrophobic interaction
原文传递
导出
摘要 通过荧光关联光谱研究了不相容的水-油界面上聚乙二醇单链的横向扩散运动,系统地研究了PEO单链的扩散运动速率随着水溶液中电解质NaCl浓度的升高的变化规律,发现随着盐浓度的升高,扩散系数的变化主要取决于油相的黏度,说明NaCl浓度的升高增强了聚合物链与烷烃油相的疏水相互作用. The lateral diffusion of individual polymer chain of polyethylene oxide （PEO） at oil-water interfaces was studied using fluorescence correlation spectroscopy （FCS）.The diffusion coefficient of PEO was systematically under variable salt concentration of NaCl in the aqueous phase and it was found that the diffusion coefficient of the adsorbed polymer chain was very much determined by the viscosity of the oil phase.This fact indicates an enhanced hydrophobic interaction of the PEO chain with the oil phase.
作者 杨京法 赵江
机构地区 中国科学院化学研究所高分子物理与化学国家重点实验室
出处 《中国科学：化学》 CAS CSCD 北大核心 2011年第8期1325-1330,共6页 SCIENTIA SINICA Chimica
基金 国家自然科学基金(20925416 20874108) 中国科学院知识创新工程(KJCX2-EW-W09)资助
关键词 液体-液体界面 聚合物单链 疏水相互作用 单分子荧光 liquid-liquid interfaces single polymer chain hydrophobic interaction single molecule fluorescence
分类号 O631.3 [理学—高分子化学]
  • 相关文献

参考文献27

  • 1Genzer J, Efimenko K. Recent developments in superhydrophobic surfaces and their relevance to marine fouling: A review. Biofouling, 2006, 22:339-360.
  • 2Hashmi SM, Firoozabadi A. Effect of dispersant on asphaltene suspension dynamics aggregation and sedimentation. J Phys Chem B, 2010, 114:15780-15788.
  • 3Alvarez N J, Lee W, Walker LM, Anna SL. The effect of alkane tail length of CiE8 surfactants on transport to the silicone oil-water interface. J ColloidlnterfSci, 2011, 355:231-236.
  • 4Eastoe J, Rankin A, Wat R, Bain CD. Surfactant adsorption dynamics. Int Rev Phys Chem, 2001, 20:357-386.
  • 5Wood J, Sharma R. How long is the long-range hydrophobic attraction? Langmuir, 1995, 11:4797-4802.
  • 6张希,王朝,王治强.超两亲分子:可控组装与解组装[J].中国科学：化学,2011,41(2):216-220. 被引量：6
  • 7程彩霞,焦体峰,唐汝培,刘鸣华,习复.聚甲基丙烯酸甲酯-聚乙二醇嵌段共聚物在空气和水界面上的界面行为[J].中国科学（B辑）,2005,35(3):227-232. 被引量：1
  • 8Lu YF, Williamson B, Gillespie R. Recent advancement in application of hydrophobic interaction chromatography for aggregate removal in industrial purification. Curr Pharm Biotechnol, 2009, 10:427-433.
  • 9Spolar RS, Ha JH, Record MT. Hydrophobic effect in protein folding and other noncovalent processes involving proteins. Proc Natl Acad Sci USA, 1989, 86:8382-8385.
  • 10Thomas AS, Elcock AH. Direct measurement of the kinetics and thermodynamics of association of hydrophobic molecules from molecular dynamics simulations. J Phys Chem Lett, 2010, 2:19-24.

二级参考文献39

  • 1Wang YP, Xu HP, Zhang X. Tuning the amphiphilicity of building blocks: Controlled self-assembly and disassembly for functional supramolecular materials. Adv Mater, 2009, 21:2849-2864.
  • 2Zhang X, Wang C. Supramolecular amphiphiles. Chem Soc Rev, 2011, 40:94-101.
  • 3Wang YP, Ma N, Wang ZQ. Photo-controlled reversible supramolecular assembly of an azobenzene-containing surfactant with ctcyclodextrin. Angew Chem Int Ed, 2007, 46:2823-2826.
  • 4Wan PB, Jiang YG, Wang YP, Wang ZQ, Zhang X. Tuning surface wettability through photocontrolled reversible molecular shuttle. Chem Commun, 2008, 44:5710-5712.
  • 5Wan PB, Wang YP, Jiang YG, Xu HP, Wang ZQ, Zhang X. Fabrication of reactivated biointerface for dual-controlled reversible immobilization of cytochrome C. Adv Mater, 2009, 21:4362-4365.
  • 6Wan PB, Chen YY, Xing YB, Chi LF, Zhang X. Combining host-guest systems with nonfouling material for the fabrication of a biosufface: Toward nearly complete and reversible resistance of cytochrome C. Langmuir, 2010, 26:12515-12517.
  • 7Wang C, Yin SC, Chen SL, Xu HP, Wang ZQ, Zhang X. Controlled self-assembly manipulated by charge transfer interaction: From tubes to vesicles. Angew Chem lnt Ed, 2008, 47:9049-9052.
  • 8Wang C, Guo YS, Wang YP, Xu HP, Wang RJ, Zhang X. Supramolecular amphiphiles based on water-soluble charge transfer complex: Fabrication of ultra-long nanofiber with tunable straightness. Angew Chem Int Ed, 2009, 48:8962-8965.
  • 9Wang YP, Han P, Xu HP, Wang ZQ, Zhang X, Kabanov AV. Photocontrolled self-assembly and disassembly of block ionomer complex vesicles: A facile approach toward supramolecular polymer nanocontainers. Langmuir, 2010, 26:709-715.
  • 10Wang C, Guo YS, Wang ZQ, Zhang X. Superamphiphiles based on charge transfer complex: Controllable hierarchical self-assembly of nanoribbons. Langmuir, 2010, 26:14509-14511.

共引文献5

中国科学：化学
2011年 第8期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部