STIFF (DNA) AND FLEXIBLE (NAPSS) POLYELECTROLYTE CHAIN EXPANSION AT VERY-LOW SALT CONCENTRATION

被引：54

作者：

BOROCHOV, N ^{[1
]}

EISENBERG, H ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT STRUCT BIOL,IL-76100 REHOVOT,ISRAEL

来源：

MACROMOLECULES | 1994年 / 27卷 / 06期

关键词：

D O I：

10.1021/ma00084a025

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The expansion of sodium poly(styrenesulfonate) (NaPSS) polyelectrolyte coils has been studied by light scattering and velocity sedimentation at a NaCl concentration of 0.5-0.001 M. Good agreement between the flexible NaPSS and intrinsically stiff DNA (data from a previous study) is obtained in terms of the conformation-space renormalization-group approach. Present polyelectrolyte the expansion and excluded-volume theories are not adequate to satisfactorily interpret the experimental results.

引用

页码：1440 / 1445

页数：6

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