Temperature dependence of polyelectrolyte multilayer assembly

被引：151

作者：

Tan, HL ^{[1
]}

McMurdo, MJ ^{[1
]}

Pan, GQ ^{[1
]}

Van Patten, PG ^{[1
]}

机构：

[1] Ohio Univ, Dept Chem & Biochem, Clippinger Labs, Athens, OH 45701 USA

来源：

LANGMUIR | 2003年 / 19卷 / 22期

关键词：

D O I：

10.1021/la035094f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The thicknesses of polyelectrolyte multilayer thin films (PEMs) are reported as a function of deposition temperature and ionic strength. PEMs fabricated at high salt and elevated temperatures are significantly thicker than similar films deposited at room temperature. These trends in the multilayer films are not observed in single-layer films of PDDA directly deposited onto Si substrates. Based on the results of this study, a new mechanism is proposed to explain the dependence of PEM thickness on temperature. It is believed that elevated temperature swells the existing film and allows for increased trapping of solution-phase polymer within the already-existing layers. The results and interpretation have bearing on the present understanding of PEM film deposition and also on the ability to control interpenetration between individual polymer layers.

引用

页码：9311 / 9314

页数：4

共 28 条

[21] Free energy model for layer-by-layer processing of polyelectrolyte multilayer films [J].

Park, SY ;

Rubner, MF ;

Mayes, AM .

LANGMUIR, 2002, 18 (24) :9600-9604

[22] Molecular basis for the explanation of the exponential growth of polyelectrolyte multilayers [J].

Picart, C ;

Mutterer, J ;

Richert, L ;

Luo, Y ;

Prestwich, GD ;

Schaaf, P ;

Voegel, JC ;

Lavalle, P .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2002, 99 (20) :12531-12535

[23] Mechanism of polyelectrolyte multilayer growth: Charge overcompensation and distribution [J].

Schlenoff, JB ;

Dubas, ST .

MACROMOLECULES, 2001, 34 (03) :592-598

[24] Investigation of the influence of polyelectrolyte charge density on the growth of multilayer thin films prepared by the layer-by-layer technique [J].

Schoeler, B ;

Kumaraswamy, G ;

Caruso, F .

MACROMOLECULES, 2002, 35 (03) :889-897

[25] pH-dependent thickness behavior of sequentially adsorbed layers of weak polyelectrolytes [J].

Shiratori, SS ;

Rubner, MF .

MACROMOLECULES, 2000, 33 (11) :4213-4219

[26] Influence of charge density and ionic strength on the multilayer formation of strong polyelectrolytes [J].

Steitz, R ;

Jaeger, W ;

von Klitzing, R .

LANGMUIR, 2001, 17 (15) :4471-4474

[27] Reversible swelling of polyanion/polycation multilayer films in solutions of different ionic strength [J].

Sukhorukov, GB ;

Schmitt, J ;

Decher, G .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1996, 100 (06) :948-953

[28]

VANPATTEN PG, UNPUB LANGMUIR

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