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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 20, 2002
Accepted August 8, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fabrication of Highly Ordered Multilayer Thin Films and Its Applications

Jinhan Cho Sangcheol Kim Kookheon Char^†

School of Chemical Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-744, Korea

khchar@plaza.snu.ac.kr

Korean Journal of Chemical Engineering, January 2003, 20(1), 174-179(6), 10.1007/BF02697205

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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_x000D_ prepared by the spin self-assembly (SA) method.

Keywords

Spin Self-Assembly Method Multilayer Electrostatic Attraction Electroluminescence Device

References

Chou FC, Wu PY, J. Electrochem. Soc., 147(2), 699 (2000)
Cho J, Char K, Kim SY, Hong JD, Lee SK, Kim DY, Thin Solid Films, 379(1-2), 188 (2000)
Decher G, Science, 277(5330), 1232 (1997)
Flack WW, Soong DS, Bell AT, Hess DW, J. Appl. Phys., 56, 1199 (1984)
He Y, Gong S, Hattori R, Kanicki J, Appl. Phys. Lett., 74, 2265 (1999)
Ho PKH, Kim JS, Burroughes JH, Becker H, Li SFY, Brown TM, Cacialli F, Friend RH, Nature, 404(6777), 481 (2000)
Ho PKH, Granstrom M, Friend RH, Greenham NC, Adv. Mater., 10, 769 (1998)
Hong H, Steitz R, Kirstein S, Davidov D, Adv. Mater., 10, 1104 (1998)
Kim JS, Nam TY, Huh YJ, Korean J. Chem. Eng., 14(2), 88 (1997)
Kotov NA, Dekany I, Fendler JH, J. Phys. Chem., 99(35), 13065 (1995)
Laschewsky A, Wischerhoff E, Kauranen M, Persoons A, Macromolecules, 30(26), 8304 (1997)
Lawrence CJ, Phys. Fluids, 31, 2786 (1988)
Lenahan KM, Wang YX, Liu YJ, Chaus RO, Heflin JR, Marciu D, Figura C, Adv. Mater., 10, 853 (1998)
Lvov Y, Ariga K, Ichinose I, Kunitake T, J. Am. Chem. Soc., 117(22), 6117 (1995)
Mendelsohn JD, Barrett CJ, Chan VV, Pal AJ, Mayes AM, Rubner MF, Langmuir, 16(11), 5017 (2000)
Meyerhofer D, J. Appl. Phys., 49, 3973 (1978)
Ohara T, Matsumoto Y, Ohasi H, Phys. Fluids A, 1, 1949 (1989)
Onitsuka O, Fou AC, Ferreira M, Hsieh BR, Rubner MF, J. Appl. Phys., 80, 4067 (1996)
Park YO, Park HS, Park SJ, Kim SD, Choi HK, Lim JH, Korean J. Chem. Eng., 18(6), 1020 (2001)
Zhang X, Shen J, Adv. Mater., 11, 1139 (1999)