Ion-induced morphological changes in ''crew-cut'' aggregates of amphiphilic block copolymers

被引：854

作者：

Zhang, LF ^{[1
]}

Yu, K ^{[1
]}

Eisenberg, A ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT CHEM,MONTREAL,PQ H3A 2K6,CANADA

来源：

SCIENCE | 1996年 / 272卷 / 5269期

关键词：

D O I：

10.1126/science.272.5269.1777

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The addition of ions in micromolar (CaCl2 or HCl) or millimolar (NaCl) concentrations can change the morphology of ''crew-cut'' aggregates of amphiphilic block copolymers in dilute solutions, In addition to spherical, rodlike, and univesicular or lamellar aggregates, an unusual large compound vesicle morphology can be obtained from a single block copolymer. Some features of the spontaneously formed large compound vesicles may make them especially useful as vehicles for delivering drugs and as models of biological cells. Gelation of a dilute spherical micelle solution can also be induced by ions as the result of the formation of a cross-linked ''pearl necklace'' morphology.

引用

页码：1777 / 1779

页数：3

共 27 条

[1]

ANTONETTI M, 1994, MACROMOLECULES, V27, P2376

[2] CRITICAL MICELLIZATION PHENOMENA IN BLOCK POLYELECTROLYTE SOLUTIONS [J].