Temperature-induced changes in polyelectrolyte films at the solid–liquid interface

被引：0
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作者：
R. Steitz
V. Leiner
K. Tauer
V. Khrenov
R. v. Klitzing
机构：
[1] Stranski-Laboratorium für Physikalische und Theoretische Chemie,
[2] TU Berlin,undefined
[3] Str. d. 17. Juni 112,undefined
[4] 10623 Berlin,undefined
[5] Germany,undefined
[6] Hahn-Meitner-Institut Berlin,undefined
[7] Glienicker Str. 100,undefined
[8] 14109 Berlin,undefined
[9] Germany,undefined
[10] Institut Laue-Langevin,undefined
[11] 6,undefined
[12] rue Jules Horowitz,undefined
[13] BP 156,undefined
[14] 38042 Grenoble Cedex 9,undefined
[15] France,undefined
[16] Max-Planck-Institut für Kolloid- und Grenzflächenforschung,undefined
[17] 14424 Potsdam,undefined
[18] Germany,undefined
来源：
Applied Physics A | 2002年 / 74卷
关键词：
PACS: 61.12.Ha; 68.08.-p; 81.16.Dn;
D O I：
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摘要：
Polyelectrolyte multilayers (film thickness 30–60 nm) were built on top of silicon substrates by layer-by-layer deposition of oppositely charged polyelectrolytes from aqueous solutions. Three kinds of films were investigated: (A) films of a homo-polyelectrolyte and a diblock copolymer with a thermosensitive poly(N-isopropyl-acrylamide) block and (B) and (C) two reference systems built solely from homo-polyelectrolytes of opposite charges. Thermal behavior and subsequent structural changes of the functionalized films against D2O were investigated by neutron reflectometry. All films showed irreversible annealing effects upon heating. In addition, the thermosensitive films showed a decrease in thickness at elevated temperature (>30 °C) while the reference samples, composed of thermo-insensitive polyelectrolytes only, did not.
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页码：s519 / s521
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