Morphological Manipulation of Ionic Block Copolymer Micelles Using an Electric Field

被引：21

作者：

Lee, Sun Ju ^{[1
]}

Park, Moon Jeong ^{[1
,2
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 790784, South Korea

[2] Pohang Univ Sci & Technol POSTECH, Div Adv Mat Sci WCU, Pohang 790784, South Korea

来源：

LANGMUIR | 2010年 / 26卷 / 23期

关键词：

ELECTROLYTE MEMBRANES; CAPILLARY ATTRACTION; TRANSITION; BEHAVIOR; ACID); NANOPARTICLES; COUNTERIONS; ORIENTATION; PARTICLES; ALIGNMENT;

D O I：

10.1021/la103708d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present an electric-field-triggered sphere-to-cylinder transition of negatively charged block copolymer micelles with a radically low electric field of 30 V/cm. The system investigated is dilute solutions of strong polyelectrolyte containing ionic-b-neutral block copolymers (i.e., poly(styrenesulfonate-b-methylbutylene)). We have carried out in situ small-angle X-ray scattering experiments equipped with a dc power supply, combined with electron microscopy and atomic force microscopy. The application of small electrical fields across the solutions of spherical micelles results in the transient morphology of interconnected spheres, which are eventually transformed into a cylindrical shape with time. The E-field-induced cylindrical micelles revert to spherical micelles when the E field is switched off.

引用

页码：17827 / 17830

页数：4

共 54 条

[1] Drug delivery systems: Entering the mainstream [J].

Allen, TM ;

Cullis, PR .

SCIENCE, 2004, 303 (5665) :1818-1822

[2]

[Anonymous], 1992, INTERMOLECULAR SURFA

[3]

[Anonymous], 1991, Laser light scattering

[4] pH-Sensitivity of the E3/K3 Heterodimeric Coiled Coil [J].

Apostolovic, Bojana ;

Klok, Harm-Anton .

BIOMACROMOLECULES, 2008, 9 (11) :3173-3180

[5] Counterions in the growth of ionic micelles in aqueous electrolyte solutions: A small-angle neutron scattering study [J].

Aswal, VK ;

Goyal, PS .

PHYSICAL REVIEW E, 2000, 61 (03) :2947-2953

[6] Temperature-dependent micellar structures in poly(styrene-b-isoprene) diblock copolymer solutions near the critical micelle temperature [J].

Bang, J ;

Viswanathan, K ;

Lodge, TP ;

Park, MJ ;

Char, K .

JOURNAL OF CHEMICAL PHYSICS, 2004, 121 (22) :11489-11500

[7] Large scale domain alignment of a block copolymer from solution using electric fields [J].

Böker, A ;

Knoll, A ;

Elbs, H ;

Abetz, V ;

Müller, AHE ;

Krausch, G .

MACROMOLECULES, 2002, 35 (04) :1319-1325

[8] Polymer micelle with cross-linked ionic core [J].

Bronich, TK ;

Keifer, PA ;

Shlyakhtenko, LS ;

Kabanov, AV .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (23) :8236-8237

[9] Synthesis and self-assembly of the organic-organometallic diblock copolymer poly(isoprene-b-ferrocenylphenylphosphine):: Shell cross-linking and coordination chemistry of nanospheres with a polyferrocene core [J].

Cao, L ;

Manners, I ;

Winnik, MA .

MACROMOLECULES, 2001, 34 (10) :3353-3360

[10] Unique toroidal morphology from composition and sequence control of triblock copolymers [J].

Chen, ZY ;

Cui, HG ;

Hales, K ;

Li, ZB ;

Qi, K ;

Pochan, DJ ;

Wooley, KL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (24) :8592-8593

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