Solution and Surface Composition Gradients via Microfluidic Confinement: Fabrication of a Statistical-Copolymer-Brush Composition Gradient

A stable solution composition gradient is generated inside a microchannel by varying the relative flow rates of two solutions that differ in composition. This solution gradient is used to synthesize a surface‐grafted statistical‐copolymer‐brush composition gradient via surface‐initiated atom transfe...

Full description

Saved in:
Bibliographic Details
Published in:Advanced materials (Weinheim) 2006-06, Vol.18 (11), p.1427-1430
Main Authors: Xu, C., Barnes, S. E., Wu, T., Fischer, D. A., DeLongchamp, D. M., Batteas, J. D., Beers, K. L.
Format: Article
Language:English
Subjects:
Composition gradient
Composition gradient, surface
Copolymers
Copolymers, statistical
Microfluidic systems
Polymer brushes
statistical
surface
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A stable solution composition gradient is generated inside a microchannel by varying the relative flow rates of two solutions that differ in composition. This solution gradient is used to synthesize a surface‐grafted statistical‐copolymer‐brush composition gradient via surface‐initiated atom transfer radical polymerization (ATRP; see schematic). Near‐edge absorption fine structure spectroscopy confirms the continuous transition of surface composition from one end of the substrate to the other.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200502341