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

Research output: Contribution to journalArticle

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.
LanguageEnglish
Pages1076-1080
Number of pages5
JournalSoft matter
Volume2
Issue number12
Early online date9 Oct 2006
DOIs
Publication statusPublished - 2006

Fingerprint

Atom transfer radical polymerization
brushes
Brushes
swelling
Swelling
polymerization
atoms
Methacrylates
Polymers
Neutrons
neutrons
polymers
Substrates
profiles
Chemical analysis
Experiments

Cite this

Geoghegan, M., Ruiz-Pérez, L., Dang, C. C., Parnell, A. J., Martin, S. J., Howse, J. R., ... 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
Geoghegan, Mark ; Ruiz-Pérez, Lorena ; Dang, Cheen C. ; Parnell, Andrew J. ; Martin, Simon J. ; Howse, Jonathan R. ; Jones, Richard A.L. ; Golestanian, Ramin ; Topham, Paul D. ; Crook, Colin J. ; Ryan, Anthony J. ; Sivia, Devinderjit S. ; Webster, John R.P. ; Menelle, Alain. / The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization. In: Soft matter. 2006 ; Vol. 2, No. 12. pp. 1076-1080.
@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",
note = "Copyright 2008 Elsevier B.V., All rights reserved.",
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",

}

Geoghegan, M, Ruiz-Pérez, L, Dang, CC, Parnell, AJ, Martin, SJ, Howse, JR, Jones, RAL, Golestanian, R, Topham, PD, Crook, CJ, Ryan, AJ, Sivia, DS, Webster, JRP & Menelle, A 2006, 'The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization' Soft matter, vol. 2, no. 12, pp. 1076-1080. https://doi.org/10.1039/b611847j

The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization. / Geoghegan, Mark; Ruiz-Pérez, Lorena; Dang, Cheen C.; Parnell, Andrew J.; Martin, Simon J.; Howse, Jonathan R.; Jones, Richard A.L.; Golestanian, Ramin; Topham, Paul D.; Crook, Colin J.; Ryan, Anthony J.; Sivia, Devinderjit S.; Webster, John R.P.; Menelle, Alain.

In: Soft matter, Vol. 2, No. 12, 2006, p. 1076-1080.

Research output: Contribution to journalArticle

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

N1 - Copyright 2008 Elsevier B.V., All rights reserved.

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

VL - 2

SP - 1076

EP - 1080

JO - Soft matter

T2 - Soft matter

JF - Soft matter

SN - 1744-683X

IS - 12

ER -

Geoghegan M, Ruiz-Pérez L, Dang CC, Parnell AJ, Martin SJ, Howse JR et al. The pH-induced swelling and collapse of a polybase brush synthesized by atom transfer radical polymerization. Soft matter. 2006;2(12):1076-1080. https://doi.org/10.1039/b611847j