Solvent-induced morphological transition in core-cross-linked block copolymer micelles

被引：114

作者：

Huang, HY

Hoogenboom, R

Leenen, MAM

Guillet, P

Jonas, AM

Schubert, US

Gohy, JF

机构：

[1] Eindhoven Univ Technol, Lab Macromol Chem & Nanosci, NL-5600 MB Eindhoven, Netherlands

[2] DPI, Eindhoven, Netherlands

[3] Catholic Univ Louvain, Unite CMAT, B-1348 Louvain, Belgium

[4] Catholic Univ Louvain, Res Ctr Micro & Nanoscop Mat & Elect Devices, B-1348 Louvain, Belgium

[5] Catholic Univ Louvain, Unite Chim & Phys Hauts Polymeres, B-1348 Louvain, Belgium

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 11期

关键词：

D O I：

10.1021/ja057762k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Microwave-assisted polymerization has been utilized to synthesize amphiphilic poly(2-ethyl-2-oxazoline-block-2-'' soy alkyl ''-2-oxazoline) diblock copolymers (PEtOx-PSoyOx). The amphiphilic block copolymers have been used to prepare aqueous spherical micelles consisting of a PEtOx Corona and a PSoyOx core, which have been further cross-linked by UV irradiation. The morphology of these crosslinked micelles has been shown to reversibly change from spheres to short rods referred to as rice grains whenever the micelles were transferred from water into acetone, a nonselective solvent for the constituent blocks. This morphological transition has been attributed to the swelling of the slightly cross-linked PSoyOx core.

引用

收藏

页码：3784 / 3788

页数：5

相关论文

共 28 条

[1] POLYOXAZOLINES BASED ON FATTY-ACIDS [J].

BECK, M ;

BIRNBRICH, P ;

EICKEN, U ;

FISCHER, H ;

FRISTAD, WE ;

HASE, B ;

KRAUSE, HJ .

ANGEWANDTE MAKROMOLEKULARE CHEMIE, 1994, 223 :217-233

[2] Exchange of polymer molecules between block copolymer micelles studied by emission spectroscopy. A method for the quantification of unimer exchange rates [J].

Creutz, S ;

vanStam, J ;

Antoun, S ;

DeSchryver, FC ;

Jerome, R .

MACROMOLECULES, 1997, 30 (14) :4078-4083

[3] Dynamics of poly((dimethylamino)alkyl methacrylate-block-sodium methacrylate) micelles. Influence of hydrophobicity and molecular architecture on the exchange rate of copolymer molecules [J].

Creutz, S ;

van Stam, J ;

De Schryver, FC ;

Jerome, R .

MACROMOLECULES, 1998, 31 (03) :681-689

[4] Amphiphilic Janus micelles with polystyrene and poly(methacrylic acid) hemispheres [J].

Erhardt, R ;

Zhang, MF ;

Böker, A ;

Zettl, H ;

Abetz, C ;

Frederik, P ;

Krausch, G ;

Abetz, V ;

Müller, AHE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (11) :3260-3267

[5] Janus micelles [J].

Erhardt, R ;

Böker, A ;

Zettl, H ;

Kaya, H ;

Pyckhout-Hintzen, W ;

Krausch, G ;

Abetz, V ;

Müller, AHE .

MACROMOLECULES, 2001, 34 (04) :1069-1075

[6] Block copolymer micelles [J].

Gohy, JF .

BLOCK COPOLYMERS II, 2005, 190 :65-136

[7] Cylindrical micelles from the aqueous self-assembly of an amphiphilic poly(ethylene oxide)-b-poly(ferrocenylsilane) (PEO-b-PFS) block copolymer with a metallo-supramolecular linker at the block junction [J].

Gohy, JF ;

Lohmeijer, BGG ;

Alexeev, A ;

Wang, XS ;

Manners, I ;

Winnik, MA ;

Schubert, US .

CHEMISTRY-A EUROPEAN JOURNAL, 2004, 10 (17) :4315-4323

[8] Star polymers and nanospheres from cross-linkable diblock copolymers [J].

Guo, A ;

Liu, GJ ;

Tao, J .

MACROMOLECULES, 1996, 29 (07) :2487-2493

[9] Water-soluble nanospheres of poly(2-cinnamoylethyl methacrylate)-block-poly(acrylic acid) [J].

Henselwood, F ;

Liu, GJ .

MACROMOLECULES, 1997, 30 (03) :488-493

[10] Overcharging of polyelectrolyte complexes by the guest polyelectrolyte studied by fluorescence spectroscopy [J].

Holappa, S ;

Kantonen, L ;

Andersson, T ;

Winnik, F ;

Tenhu, H .

LANGMUIR, 2005, 21 (24) :11431-11438