Temperature Response of PNIPAM Derivatives at Planar Surfaces: Comparison between Polyelectrolyte Multilayers and Adsorbed Microgels

被引：21

作者：

Burmistrova, Anna ^{[1
]}

Steitz, Roland ^{[2
]}

von Klitzing, Regine ^{[1
]}

机构：

[1] Tech Univ Berlin, Stranski Lab Phys & Theoret Chem, Inst Chem, D-10623 Berlin, Germany

[2] Helmholtz Zentrum Berlin, D-14109 Berlin, Germany

来源：

CHEMPHYSCHEM | 2010年 / 11卷 / 17期

关键词：

gels; phase transitions; polymers; scanning probe microscopy; thin films; POLY(N-ISOPROPYLACRYLAMIDE-CO-ACRYLIC ACID) MICROGELS; CORE-SHELL PARTICLES; SMALL-ANGLE NEUTRON; CHARGE-DENSITY; THIN-FILMS; IONIC-STRENGTH; N-ISOPROPYLACRYLAMIDE; GRAFT-COPOLYMERS; DYNAMIC LIGHT; COMBINED AFM;

D O I：

10.1002/cphc.201000378

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two strategies for the design of thermosensitive coatings based on poly-N-isopropyl acrylamide (PNIPAM) derivatives are presented: 1) polyelectrolyte multilayers containing a diblock copolymer with a large PNIPAM block and 2) adsorption of PNIPAM microgels. The multilayers show only a small but irreversible response to the increase of outer temperature due to the strong interdigitation between the charged part and the temperature-sensitive block, while the adsorbed microgels show a pronounced and reversible response. It will be shown that the microgel number density can be easily controlled at the substrate. The swelling and shrinking of two extremes in density are characterized: densely packed microgels, which are considered as a film, and individual microgels, which are able to swell and shrink also lateral to the surface.

引用

页码：3571 / 3579

页数：9

共 55 条

[1] Swelling kinetics of poly(N-isopropylacrylamide) gel [J].

Andersson, M ;

Axelsson, A ;

Zacchi, G .

JOURNAL OF CONTROLLED RELEASE, 1998, 50 (1-3) :273-281

[2] New experimental setup to use ellipsometry to study liquid-liquid and liquid-solid interfaces [J].

Benjamins, JW ;

Jönsson, B ;

Thuresson, K ;

Nylander, T .

LANGMUIR, 2002, 18 (16) :6437-6444

[3]

BRAUN C, 1997, FITTING ROUTINE PARR

[4] Control of number density and swelling/shrinking behavior of P(NIPAM-AAc) particles at solid surfaces [J].

Burmistrova, Anna ;

von Klitzing, Regine .

JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (17) :3502-3507

[5] LLS and FTIR studies on the hysteresis in association and dissociation of poly(N-isopropylacrylamide) chains in water [J].

Cheng, H ;

Shen, L ;

Wu, C .

MACROMOLECULES, 2006, 39 (06) :2325-2329

[6] Temperature dependent physicochemical properties of poly(N-isopropylacrylamide-co-N-(1-phenylethyl) acrylamide) thin films [J].

Cordeiro, Ana L. ;

Zimmermann, Ralf ;

Gramm, Stefan ;

Nitschke, Mirko ;

Janke, Andreas ;

Schaefer, Nicole ;

Grundke, Karina ;

Werner, Carsten .

SOFT MATTER, 2009, 5 (07) :1367-1377

[7] BUILDUP OF ULTRATHIN MULTILAYER FILMS BY A SELF-ASSEMBLY PROCESS .3. CONSECUTIVELY ALTERNATING ADSORPTION OF ANIONIC AND CATIONIC POLYELECTROLYTES ON CHARGED SURFACES [J].

DECHER, G ;

HONG, JD ;

SCHMITT, J .

THIN SOLID FILMS, 1992, 210 (1-2) :831-835

[8]

DODOO S, UNPUB

[9] Film-forming microgels for pH-triggered capture and release [J].

FitzGerald, Paul A. ;

Amalvy, Javier I. ;

Armes, Steven P. ;

Wanless, Erica J. .

LANGMUIR, 2008, 24 (18) :10228-10234

[10] Influence of polyelectrolyte charge density on the formation of multilayers of strong polyelectrolytes at low ionic strength [J].

Glinel, K ;

Moussa, A ;

Jonas, AM ;

Laschewsky, A .

LANGMUIR, 2002, 18 (04) :1408-1412

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