Grafting mixed responsive brushes of poly(N-isopropylacrylamide) and poly(methacrylic acid) from gold by selective initiation

被引：47

作者：

Sui, Xiaofeng ^{[1
]}

Zapotoczny, Szczepan ^{[1
,2
]}

Benetti, Edmondo M. ^{[1
,3
]}

Memesa, Mine ^{[1
]}

Hempenius, Mark A. ^{[1
]}

Vancso, G. Julius ^{[1
]}

机构：

[1] Univ Twente, MESA Inst Nanotechnol, NL-7500 Enschede, Netherlands

[2] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland

[3] ETH, Dept Mat, Surface Sci & Technol Lab, CH-8093 Zurich, Switzerland

来源：

POLYMER CHEMISTRY | 2011年 / 2卷 / 04期

关键词：

TRANSFER RADICAL POLYMERIZATION; SELF-ASSEMBLED MONOLAYERS; ALKYL FLUOROALKYL DISULFIDES; METHYL-METHACRYLATE; METHACRYLATE)/POLYSTYRENE BRUSHES; POLYELECTROLYTE BRUSH; SWELLING BEHAVIOR; SURFACE; STYRENE; TEMPERATURE;

D O I：

10.1039/c0py00393j

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Mixed polymer brushes consisting of poly(N-isopropylacrylamide) (PNIPAM) and poly(methacrylic acid) (PMAA) were prepared at room temperature by a sequential combination of surface-initiated atom transfer radical polymerization (SI-ATRP) and iniferter-mediated photopolymerization (SI-IMP). Mixed monolayers of disulfides of ATRP initiator and IMP iniferter on gold substrates were employed for independent initiation of the two polymer components. As the polymerization of PNIPAM and PMAA was performed in successive steps, the chain length and the corresponding brush height of the constituents could be individually controlled. Grazing angle Fourier transform infrared spectroscopy (FTIR) and ellipsometry were performed to monitor the component-specific formation of the grafts. The responsive behavior of the mixed polymer brushes under different pH was investigated by contact angle (CA) measurements, atomic force microscopy (AFM) and in situ ellipsometry. Reversible structural reorganization and variation of brush thickness and of wetting characteristics were monitored.

引用

页码：879 / 884

页数：6

共 50 条

[31] Direct visualization of the real time swelling and collapse of a poly(methacrylic acid) brush using atomic force microscopy [J].

Parnell, Andrew J. ;

Martin, Simon J. ;

Jones, Richard A. L. ;

Vasilev, C. ;

Crook, Colin J. ;

Ryan, Anthony J. .

SOFT MATTER, 2009, 5 (02) :296-299

[32] Synthesis, characterization and swelling behaviour of poly(methacrylic acid) brushes synthesized using atom transfer radical polymerization [J].

Parnell, Andrew J. ;

Martin, Simon J. ;

Dang, Cheen C. ;

Geoghegan, Mark ;

Jones, Richard A. L. ;

Crook, Colin J. ;

Howse, Jonathan R. ;

Ryan, Anthony J. .

POLYMER, 2009, 50 (04) :1005-1014

[33] Swelling behavior of multiresponsive poly(methacrylic acid)-block-poly (N-isopropylacrylamide) brushes synthesized using surface-initiated photoiniferter-mediated photopolymerization [J].

Rahane, Santosh B. ;

Floyd, J. Alaina ;

Metters, Andrew T. ;

Kilbey, S. Michael, II .

ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (08) :1232-1240

[34] Surface-responsive materials [J].

Russell, TP .

SCIENCE, 2002, 297 (5583) :964-967

[35] Local composition of nanophase-separated mixed polymer brushes [J].

Santer, S ;

Kopyshev, A ;

Yang, HK ;

Rühe, J .

MACROMOLECULES, 2006, 39 (08) :3056-3064

[36] Self-assembled monolayers of symmetrical and mixed alkyl fluoroalkyl disulfides on gold .1. Synthesis of disulfides and investigation of monolayer properties [J].

Schonherr, H ;

Ringsdorf, H .

LANGMUIR, 1996, 12 (16) :3891-3897

[37] Self-assembled monolayers of symmetrical and mixed alkyl fluoroalkyl disulfides on gold .2. Investigation of thermal stability and phase separation [J].

Schonherr, H ;

Ringsdorf, H ;

Jaschke, M ;

Butt, HJ ;

Bamberg, E ;

Allinson, H ;

Evans, SD .

LANGMUIR, 1996, 12 (16) :3898-3904

[38] Using atom transfer radical polymerization to amplify monolayers of initiators patterned by microcontact printing into polymer brushes for pattern transfer [J].

Shah, RR ;

Merreceyes, D ;

Husemann, M ;

Rees, I ;

Abbott, NL ;

Hawker, CJ ;

Hedrick, JL .

MACROMOLECULES, 2000, 33 (02) :597-605

[39]

Stuart MAC, 2010, NAT MATER, V9, P101, DOI [10.1038/NMAT2614, 10.1038/nmat2614]

[40]

Sui XF, 2008, PROG CHEM, V20, P1122

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