Core-shell nanostructures from single poly(N-vinylcaprolactam) macromolecules:: Stabilization and visualization

被引：9

作者：

Bronstein, LM ^{[1
]}

Kostylev, M

Tsvetkova, I

Tomaszewski, J

Stein, B

Makhaeva, EE

Okhapkin, I

Khokhlov, AR

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

[2] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA

[3] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 117234, Russia

来源：

LANGMUIR | 2005年 / 21卷 / 07期

关键词：

D O I：

10.1021/la047163b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Formation of core-shell poly(N-vinylcaprolactam) (PVCL) single-molecule nanostructures due to interaction of PVCL with metal ions was studied using transmission electron microscopy, C-13 NMR, and light scattering. This study demonstrates that addition of CoCl2 to PVCL in its globular conformation yields unimolecular core-shell polymer particles with the core decorated with Co(II) ions. The crucial condition for formation of well-defined unimolecular nanostructures is the presence of stable globular aggregates in aqueous solution. Moreover, the metal ions should have a sufficiently high coordination number (higher than 2) to provide a cross-linking and stabilization of the core.

引用

页码：2652 / 2655

页数：4

共 28 条

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