Counterion distribution in a spherical charged sparse brush

被引：36

作者：

Muller, F

Fontaine, P

Delsanti, M

Belloni, L

Yang, J

Chen, YJ

Mays, JW

Lesieur, P

Tirrell, M

Guenoun, P

机构：

[1] Ctr Univ Paris Sud, Lab Utilisat Rayonnement Electromagnet, F-91898 Orsay, France

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

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

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

[5] Exxon Chem Co, Baytown, TX 77522 USA

[6] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA

[7] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

EUROPEAN PHYSICAL JOURNAL E | 2001年 / 6卷 / 02期

关键词：

D O I：

10.1007/s101890170010

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：

The counterion distribution within a spherical polyelectrolyte sparse brush was measured by small-angle X-ray scattering using contrast variation with different counterions by means of ion dialysis. The brush was made by self-association of charged diblock copolymers. Thanks to the contrast variation method, we were able to separate the signal due to the monomers and the signal due to the counterions. At a small length scale, it is demonstrated that the system behaves as independent charged rods whose counterion distribution follows the Poisson-Boltzmann model.

引用

页码：109 / 115

页数：7

共 31 条

[11] THE POTENTIAL OF AN INFINITE ROD-LIKE MOLECULE AND THE DISTRIBUTION OF THE COUNTER IONS [J].