The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization

Mark Geoghegan; Lorena Ruiz-Pérez; Cheen C. Dang; Andrew J. Parnell; Simon J. Martin; Jonathan R. Howse; Richard A.L. Jones; Ramin Golestanian; Paul D. Topham; Colin J. Crook; Anthony J. Ryan; Devinderjit S. Sivia; John R.P. Webster; Alain Menelle

doi:10.1039/b611847j

The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization

Mark Geoghegan, Lorena Ruiz-Pérez, Cheen C. Dang, Andrew J. Parnell, Simon J. Martin, Jonathan R. Howse, Richard A.L. Jones, Ramin Golestanian, Paul D. Topham, Colin J. Crook, Anthony J. Ryan, Devinderjit S. Sivia, John R.P. Webster, Alain Menelle

Chemical Engineering & Applied Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

We have used neutron reflectometry to characterize the swelling behaviour of brushes of poly[2-(diethyl amino)ethyl methacrylate], a polybase, as a function of pH. The brushes, synthesized by the "grafting from" method of atom transfer radical polymerization, were observed to approximately double their thickness in low pH solutions, although the pK is shifted to a lower pH than in dilute solution. The composition-depth profile obtained from the reflectometry experiments for the swollen brushes reveals a region depleted in polymer between the substrate and the extended part of the brush.

Original language	English
Pages (from-to)	1076-1080
Number of pages	5
Journal	Soft matter
Volume	2
Issue number	12
Early online date	9 Oct 2006
DOIs	https://doi.org/10.1039/b611847j
Publication status	Published - 2006

Access to Document

10.1039/b611847j

Cite this

Geoghegan, M., Ruiz-Pérez, L., Dang, C. C., Parnell, A. J., Martin, S. J., Howse, J. R., Jones, R. A. L., Golestanian, R., Topham, P. D., Crook, C. J., Ryan, A. J., Sivia, D. S., Webster, J. R. P., & Menelle, A. (2006). The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization. Soft matter, 2(12), 1076-1080. https://doi.org/10.1039/b611847j

@article{3e86266619be44049ab4a9ff642710d1,

title = "The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization",

abstract = "We have used neutron reflectometry to characterize the swelling behaviour of brushes of poly[2-(diethyl amino)ethyl methacrylate], a polybase, as a function of pH. The brushes, synthesized by the {"}grafting from{"} method of atom transfer radical polymerization, were observed to approximately double their thickness in low pH solutions, although the pK is shifted to a lower pH than in dilute solution. The composition-depth profile obtained from the reflectometry experiments for the swollen brushes reveals a region depleted in polymer between the substrate and the extended part of the brush. ",

author = "Mark Geoghegan and Lorena Ruiz-P{\'e}rez and Dang, {Cheen C.} and Parnell, {Andrew J.} and Martin, {Simon J.} and Howse, {Jonathan R.} and Jones, {Richard A.L.} and Ramin Golestanian and Topham, {Paul D.} and Crook, {Colin J.} and Ryan, {Anthony J.} and Sivia, {Devinderjit S.} and Webster, {John R.P.} and Alain Menelle",

year = "2006",

doi = "10.1039/b611847j",

language = "English",

volume = "2",

pages = "1076--1080",

journal = "Soft matter",

issn = "1744-683X",

publisher = "Royal Society of Chemistry",

number = "12",

}

TY - JOUR

T1 - The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization

AU - Geoghegan, Mark

AU - Ruiz-Pérez, Lorena

AU - Dang, Cheen C.

AU - Parnell, Andrew J.

AU - Martin, Simon J.

AU - Howse, Jonathan R.

AU - Jones, Richard A.L.

AU - Golestanian, Ramin

AU - Topham, Paul D.

AU - Crook, Colin J.

AU - Ryan, Anthony J.

AU - Sivia, Devinderjit S.

AU - Webster, John R.P.

AU - Menelle, Alain

PY - 2006

Y1 - 2006

N2 - We have used neutron reflectometry to characterize the swelling behaviour of brushes of poly[2-(diethyl amino)ethyl methacrylate], a polybase, as a function of pH. The brushes, synthesized by the "grafting from" method of atom transfer radical polymerization, were observed to approximately double their thickness in low pH solutions, although the pK is shifted to a lower pH than in dilute solution. The composition-depth profile obtained from the reflectometry experiments for the swollen brushes reveals a region depleted in polymer between the substrate and the extended part of the brush.

AB - We have used neutron reflectometry to characterize the swelling behaviour of brushes of poly[2-(diethyl amino)ethyl methacrylate], a polybase, as a function of pH. The brushes, synthesized by the "grafting from" method of atom transfer radical polymerization, were observed to approximately double their thickness in low pH solutions, although the pK is shifted to a lower pH than in dilute solution. The composition-depth profile obtained from the reflectometry experiments for the swollen brushes reveals a region depleted in polymer between the substrate and the extended part of the brush.

UR - http://www.scopus.com/inward/record.url?scp=33750972846&partnerID=8YFLogxK

UR - http://pubs.rsc.org/en/Content/ArticleLanding/2006/SM/b611847j#!divAbstract

U2 - 10.1039/b611847j

DO - 10.1039/b611847j

M3 - Article

AN - SCOPUS:33750972846

SN - 1744-683X

VL - 2

SP - 1076

EP - 1080

JO - Soft matter

JF - Soft matter

IS - 12

ER -

The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization

Abstract

Access to Document

Other files and links

Fingerprint

Cite this