Curvature elasticity of a grafted polyelectrolyte brush

doi:10.1103/PhysRevE.91.062602

CORC > 北京大学 > 化学与分子工程学院

	Curvature elasticity of a grafted polyelectrolyte brush
	Lei, Zhen ; Miao, Bing ; Yang, Shuang ; Chen, Er-Qiang
刊名	PHYSICAL REVIEW E
	2015
关键词	CONSISTENT-FIELD THEORY CHARGED LAMELLAR PHASES POLYMER BRUSHES BENDING MODULI DIBLOCK COPOLYMERS STATISTICAL-THEORY LIPID-MEMBRANES CURVED POLYMER LAYER MONOLAYERS
DOI	10.1103/PhysRevE.91.062602
英文摘要	The curvature elasticity of a polyelectrolyte brush monolayer attached to curved surface is investigated theoretically. An analytical method based on the strong-stretching theory for a Gaussian chain is developed to calculate the elastic modulus induced by a polyelectrolyte brush. In particular, the scaling relations for the bending or Gaussian modulus with respect to system parameters related to the electrostatic interaction (degree of ionization and salt concentration) are derived. Using the numerical self-consistent-field theory, the inner structural, free-energy, and elastic moduli are computed for the polyelectrolyte brush with excluded-volume interactions. Compared to the analytical result, the curvature elasticity has a weaker dependence on the system parameters, which is attributed to the linearization for the Poisson-Boltzmann equation in the analytical treatment. Furthermore, our results are compared to the curvature elasticity of a bare charged surface, wherefrom the unique polyelectrolyte brush effect on the surface elasticity is clarified clearly. The scaling relations derived in our paper can serve as a guide to experimental studies on the related systems.; National Natural Science Foundation of China [21474005, 21104094, 21474002]; Youth Innovation Promotion Association, CAS; SCI(E); EI; PubMed; ARTICLE; 6; 062602; 91
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418953]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Lei, Zhen,Miao, Bing,Yang, Shuang,et al. Curvature elasticity of a grafted polyelectrolyte brush[J]. PHYSICAL REVIEW E,2015.
APA	Lei, Zhen,Miao, Bing,Yang, Shuang,&Chen, Er-Qiang.(2015).Curvature elasticity of a grafted polyelectrolyte brush.PHYSICAL REVIEW E.
MLA	Lei, Zhen,et al."Curvature elasticity of a grafted polyelectrolyte brush".PHYSICAL REVIEW E (2015).