Thickness and density profiles of polyelectrolyte brushes: Dependence on grafting density and salt concentration

被引：57

作者：

Romet-Lemonne, G ^{[1
]}

Daillant, J

Guenoun, P

Yang, J

Mays, JW

机构：

[1] CEA Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

[2] CEA Saclay, Serv Chim Mol LIONS, F-91191 Gif Sur Yvette, France

[3] Univ Alabama, Dept Chem, Birmingham, AL 35294 USA

[4] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.93.148301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed neutron reflectivity measurements on a monolayer of charged diblock copolymers in a Langmuir trough, and determined precise density profiles of the polyelectrolyte brush at different densities. We obtain profiles in good agreement with existing self-consistent field computations, both for the osmotic and the salted brush regime. We show that the osmotic brush's thickness increases with density.

引用

页码：148301 / 1

页数：4

共 29 条

[1] Polyelectrolyte brushes grafted at the air/water interface [J].

Ahrens, H ;

Forster, S ;

Helm, CA .

MACROMOLECULES, 1997, 30 (26) :8447-8452

[2] ADSORPTION OF CHAIN MOLECULES WITH A POLAR HEAD A-SCALING DESCRIPTION [J].

ALEXANDER, S .

JOURNAL DE PHYSIQUE, 1977, 38 (08) :983-987

[3]

[Anonymous], 1986, NUMERICAL RECIPES C

[4] Organization of cyanobiphenyl liquid crystal molecules in prewetting films spreading on silicon wafers [J].

Bardon, S ;

Ober, R ;

Valignat, MP ;

Vandenbrouck, F ;

Cazabat, AM ;

Daillant, J .

PHYSICAL REVIEW E, 1999, 59 (06) :6808-6818

[5] CELL-ADHESION - COMPETITION BETWEEN NONSPECIFIC REPULSION AND SPECIFIC BONDING [J].

BELL, GI ;

DEMBO, M ;

BONGRAND, P .

BIOPHYSICAL JOURNAL, 1984, 45 (06) :1051-1064

[6] DIAGRAM OF THE STATES OF A GRAFTED POLYELECTROLYTE LAYER [J].

BORISOV, OV ;

ZHULINA, EB ;

BIRSHTEIN, TM .

MACROMOLECULES, 1994, 27 (17) :4795-4803

[7] Collapse of polyelectrolyte brushes: Scaling theory and simulations [J].

Csajka, FS ;

Netz, RR ;

Seidel, C ;

Joanny, JF .

EUROPEAN PHYSICAL JOURNAL E, 2001, 4 (04) :505-513

[8] ONE-TO-ONE CORRESPONDENCE BETWEEN SLOWLY DECAYING INTERFACIAL PROFILES AND REFLECTIVITY [J].

DIETRICH, S ;

SCHACK, R .

PHYSICAL REVIEW LETTERS, 1987, 58 (02) :140-143

[9] Polyelectrolytes tethered to a free surface [J].

Dubreuil, F ;

Guenoun, P .

EUROPEAN PHYSICAL JOURNAL E, 2001, 5 (01) :59-64

[10]

GEOGHEGAN M, 1997, P ROY SOC LOND A MAT, V454, P659

← 1 2 3 →