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Fabrication of highly ordered multilayer thin films and its applications

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Authors
Cho, Jinhan; Kim, Sangcheol; Char, Kookheon
Issue Date
2002
Publisher
한국화학공학회 = Korean Institute of Chemical Engineers (KIChE);
Springer Verlag
Citation
Korean J. Chem. Eng., 20, 174 (2003)
Keywords
Spin Self-Assembly MethodMultilayerElectrostatic AttractionElectroluminescence Device
Abstract
A new method is introduced to build up organic/organic multilayer films composed of cationic poly(allylamine hydrochloride) (PAH) and negatively charged poly(sodium 4-styrenesulfonate) (PSS) by using the spinning process. The adsorption process is governed by both the viscous force induced by fast solvent elimination and the electrostatic interaction between oppositely charged species. On the other hand, the centrifugal and air shear forces applied by the spinning process significantly enhance the desorption of weakly bound polyelectrolyte chains and also induce the planarization of the adsorbed polyelectrolyte layer. The film thickness per bilayer adsorbed by the conventional dipping process and the spinning process was found to be about 4 å and 24 å, respectively. The surface of the multilayer films prepared with the spinning process is quite homogeneous and smooth. Electroluminescence (EL) devices composed of alternating poly(p-phenylene vinylene) (PPV) and polyanions films show higher quantum efficiency when prepared by the spin self-assembly (SA) method.
ISSN
0256-1115 (print)
1975-7220 (online)
Language
English
URI
http://hdl.handle.net/10371/5887
DOI
https://doi.org/10.1007/BF02697205
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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