Ion multivalence and like-charge polyelectrolyte attraction

被引：176
作者：
Butler, JC
Angelini, T
Tang, JX
Wong, GCL
机构：
[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
[3] Univ Illinois, Dept Bioengn, Urbana, IL 61801 USA
[4] Brown Univ, Dept Phys, Providence, RI 02912 USA
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 02期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.91.028301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
It is known empirically that multivalent ions generate attractions between like-charged polyelectrolytes, with different valence requirements for different systems. How multivalent must an ion be before it can condense a given polyelectrolyte? Using charge-tunable M13 virus rods and a family of artificial homologous "dumbbell" divalent ions of different sizes, we have constructed a multivalent ion-polyelectrolyte phase diagram, and find an experimentally motivated general criterion for like-charged attraction based on the ion valence, ion size, and the Gouy-Chapman length.
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页数：4
相关论文
共 25 条
[1]   CONDENSATION OF DNA BY MULTIVALENT CATIONS - CONSIDERATIONS ON MECHANISM [J].
BLOOMFIELD, VA .
BIOPOLYMERS, 1991, 31 (13) :1471-1481
[2]   DNA condensation [J].
Bloomfield, VA .
CURRENT OPINION IN STRUCTURAL BIOLOGY, 1996, 6 (03) :334-341
[3]  
DAY LA, 1988, ANNU REV BIOPHYS BIO, V17, P509
[4]   DNA-inspired electrostatics [J].
Gelbart, WM ;
Bruinsma, RF ;
Pincus, PA ;
Parsegian, VA .
PHYSICS TODAY, 2000, 53 (09) :38-44
[5]   Conformational instability of rodlike polyelectrolytes due to counterion fluctuations [J].
Golestanian, R ;
Liverpool, TB .
PHYSICAL REVIEW E, 2002, 66 (05) :7-051802
[6]   Counterion-induced attraction between rigid polyelectrolytes [J].
GronbechJensen, N ;
Mashl, RJ ;
Bruinsma, RF ;
Gelbart, WM .
PHYSICAL REVIEW LETTERS, 1997, 78 (12) :2477-2480
[7]   Counterion-mediated attraction between two like-charged rods [J].
Ha, BY ;
Liu, AJ .
PHYSICAL REVIEW LETTERS, 1997, 79 (07) :1289-1292
[8]  
Israelachvili J. N., 1992, INTERMOLECULAR SURFA
[9]   FORCES BETWEEN PROTEIN MOLECULES IN SOLUTION ARISING FROM FLUCTUATIONS IN PROTON CHARGE AND CONFIGURATION [J].
KIRKWOOD, JG ;
SHUMAKER, JB .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1952, 38 (10) :863-871
[10]   Electrostatic zipper motif for DNA aggregation [J].
Kornyshev, AA ;
Leikin, S .
PHYSICAL REVIEW LETTERS, 1999, 82 (20) :4138-4141
123