Transformation of isotropic fluid to nematic gel triggered by dynamic bridging of supramolecular nanocylinders

被引：68

作者：

Ryu, JH

Lee, M ^{[1
]}

机构：

[1] Yonsei Univ, Ctr Supramol Nanoassembly, Seoul 120749, South Korea

[2] Yonsei Univ, Dept Chem, Seoul 120749, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 41期

关键词：

D O I：

10.1021/ja055583x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have synthesized an amphiphilic triblock coil-rod-coil molecule consisting of a rigid aromatic building block and poly(ethylene oxide). The coil-rod-coil molecule was observed to assemble into a cylindrical micelle structure in aqueous solution. Notably, addition of a small amount of a rod-coil-rod molecule into the cylindrical micellar solution can induce the anisotropic gelation due to dynamic interconnection of adjacent cylindrical micelles via hydrophobic and π-π interactions. Depending on the concentration of the rod-coil-rod molecule, the nematic gel can be reversibly switched into an isotropic solution of cylindrical micelles. Copyright © 2005 American Chemical Society.

引用

收藏

页码：14170 / 14171

页数：2

相关论文

共 24 条

[1] Vesicles and liposomes:: A self-assembly principle beyond lipids [J].

Antonietti, M ;

Förster, S .

ADVANCED MATERIALS, 2003, 15 (16) :1323-1333

[2] Helical nanofibers from aqueous self-assembly of an oligo(p-phenylene)-based molecular dumbbell [J].

Bae, J ;

Choi, JH ;

Yoo, YS ;

Oh, NK ;

Kim, BS ;

Lee, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (27) :9668-9669

[3] Hierarchical structures of a synthetic rodlike polyelectrolyte in water [J].

Bockstaller, M ;

Köhler, W ;

Wegner, G ;

Vlassopoulos, D ;

Fytas, G .

MACROMOLECULES, 2000, 33 (11) :3951-3953

[4]

BOERSMA S, 1981, J CHEM PHYS, V74, P6989

[5] Coordination metallacycles of an achiral dendron self-assemble via metal-metal interaction to form luminescent superhelical fibers [J].

Enomoto, M ;

Kishimura, A ;

Aida, T .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (23) :5608-5609

[6] Helical self-assembled polymers from cooperative stacking of hydrogen-bonded pairs [J].

Hirschberg, JHKK ;

Brunsveld, L ;

Ramzi, A ;

Vekemans, JAJM ;

Sijbesma, RP ;

Meijer, EW .

NATURE, 2000, 407 (6801) :167-170

[7] About supramolecular assemblies of π-conjugated systems [J].

Hoeben, FJM ;

Jonkheijm, P ;

Meijer, EW ;

Schenning, APHJ .

CHEMICAL REVIEWS, 2005, 105 (04) :1491-1546

[8] A coordination gelator that shows a reversible chromatic change and sol-gel phase-transition behavior upon oxidative/reductive stimuli [J].

Kawano, S ;

Fujita, N ;

Shinkai, S .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (28) :8592-8593

[9] End chain length effect of hydrophobically end-capped poly(ethylene oxide)s on their self-assemblies in solution [J].

Kim, M ;

Choi, YW ;

Sim, JH ;

Choo, J ;

Sohn, D .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (24) :8269-8277

[10] Heat-set gel-like networks of lipophilic Co(II) triazole complexes in organic media and their thermochromic structural transitions [J].

Kuroiwa, K ;

Shibata, T ;

Takada, A ;

Nemoto, N ;

Kimizuka, N .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (07) :2016-2021