Reconformation and metallization of unimolecular micelles in controlled environment

被引：88

作者：

Gorodyska, G

Kiriy, A

Minko, S

Tsitsilianis, C

Stamm, M

机构：

[1] Inst Polymerforsch Dresden, D-01069 Dresden, Germany

[2] Univ Patras, Dept Chem Engn, Patras 26500, Greece

来源：

NANO LETTERS | 2003年 / 3卷 / 03期

关键词：

D O I：

10.1021/nl034033z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unimolecular micelles constituted from the star-shaped PS7-P2VP(7) polysterene/poly(2-vinylpyridine) block copolymer single molecules were studied with molecular resolution using AFM. In selective solvent the unimers show core-shell structures with very pronounced segregation into the collapsed core and the extended shell formed by stretched polymer arms of P2VP, and PS in water and toluene, respectively. Metallization of P2VP arms of the copolymer leads to the organic-inorganic nanocomposite with 1-3 nm in diameter palladium clusters localized in the outer shell of unimers, forming starlike structures with metallized arms and improving the contrast to resolve the fine molecular morphology.

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页码：365 / 368

页数：4

相关论文

共 31 条

[1] A comparative experimental and theoretical study between heteroarm star and diblock copolymers in the microphase separated state [J].

Grayer, V ;

Dormidontova, EE ;

Hadziioannou, G ;

Tsitsilianis, C .

MACROMOLECULES, 2000, 33 (17) :6330-6339

[2] ON THE COLLAPSE OF MULTIBLOCK COPOLYMERS [J].

HALPERIN, A .

MACROMOLECULES, 1991, 24 (06) :1418-1419

[3] Encapsulation of functional moieties within branched star polymers:: Effect of chain length and solvent on site isolation [J].

Hecht, S ;

Vladimirov, N ;

Fréchet, JMJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (01) :18-25

[4] Starlike block copolymers with amphiphilic arms as models for unimolecular micelles [J].

Heise, A ;

Hedrick, JL ;

Frank, CW ;

Miller, RD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (37) :8647-8648

[5]

Kabanov A.V., 1998, SELF ASSEMBLING COMP

[6] Palladium wire-shaped nanoparticles from single synthetic polycation molecules [J].

Kiriy, A ;

Minko, S ;

Gorodyska, G ;

Stamm, M ;

Jaeger, W .

NANO LETTERS, 2002, 2 (08) :881-885

[7] Cascade of coil-globule conformational transitions of single flexible polyelectrolyte molecules in poor solvent [J].

Kiriy, A ;

Gorodyska, G ;

Minko, S ;

Jaeger, W ;

Stepánek, P ;

Stamm, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (45) :13454-13462

[8]

LIU S, 2002, ANGEW CHEM, V115, P1471

[9] Lateral versus perpendicular segregation in mixed polymer brushes -: art. no. 035502 [J].

Minko, S ;

Müller, M ;

Usov, D ;

Scholl, A ;

Froeck, C ;

Stamm, M .

PHYSICAL REVIEW LETTERS, 2002, 88 (03) :4-035502

[10] Mineralization of single flexible polyelectrolyte molecules [J].

Minko, S ;

Kiriy, A ;

Gorodyska, G ;

Stamm, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (34) :10192-10197

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