Controlled self-assembly of quantum dots and block copolymers in a microfluidic device

被引：48

作者：

Schabas, Greg ^{[2
]}

Yusuf, Huda ^{[1
]}

Moffitt, Matthew G. ^{[1
]}

Sinton, David ^{[2
]}

机构：

[1] Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada

[2] Univ Victoria, Dept Mech Engn, Victoria, BC V8W 3P6, Canada

来源：

LANGMUIR | 2008年 / 24卷 / 03期

关键词：

D O I：

10.1021/la703297q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The controlled self-assembly of polymer-stabilized quantum dots (QDs) into mesoscale aqueous spherical assemblies using microfluidics is described. In a flow-focusing configuration, self-assembly is initiated by the addition of water to a blended solution of polystyrene-coated QDs and amphiphilic polystyrene-block-poly(acrylic acid) stabilizing chains and terminated in a downstream quench step. The on-chip evolution of assemblies is monitored through fluorescence microscopy, and particle size distributions are determined off-chip by transmission electron microscopy. On-chip size control of the assemblies is demonstrated via both the average water concentration in the channel and the flow rate.

引用

页码：637 / 643

页数：7

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