Evaporation-induced aggregation of polystyrene-block-poly(acrylic acid) micelles to microcubic particles

被引：31

作者：

Zhang, WQ ^{[1
]}

Shi, LQ ^{[1
]}

An, YL ^{[1
]}

Shen, XD ^{[1
]}

Guo, YY ^{[1
]}

Gao, LC ^{[1
]}

Liu, Z ^{[1
]}

He, BL ^{[1
]}

机构：

[1] Nankai Univ, N&T Joint Acad, Inst Polymer Chem, State Key Lab Funct Polymer Adsorpt & Separat, Tianjin 300071, Peoples R China

来源：

LANGMUIR | 2003年 / 19卷 / 15期

关键词：

D O I：

10.1021/la034300g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An evaporation-induced method for aggregation of polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles to unusual polymeric microcubic particles is reported. PS-b-PAA self-assembles into spherical nanomicelles in the block-selective solvent water. After addition of butanone, 1-propanol, acetic acid, N,N-dimethyl-formamide (DMF), or n-butylamine, evaporation of the solvent mixture induces aggregation of the nanomicelles into microcubic particles on the substrate a glass slide. The concentration of the additive, temperature, and substrate affect the morphology of the aggregation of the nanomicelles. Vaporizing the additive/water mixture at 120 degreesC results in the formation of highly symmetrical microcubic particles on a glass slide. The size of microcubic particles is in range from 200 x 200 x 200 nm(3) to 600 x 600 x 600 nm(3). Microcubic particles can also form on a silicon and gold wafer with a size similar to that of those formed on a glass slide. The morphology of the microcubic particles almost remains unchanged at temperatures lower than 150 degreesC, while it is destroyed above 200 degreesC.

引用

页码：6026 / 6031

页数：6

共 26 条

[1] Shape-controlled synthesis of colloidal platinum nanoparticles [J].