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Fabrication of Polymer Light Emitting Diodes by Layer-by-Layer Complexation Technique

Published online by Cambridge University Press:  10 February 2011

Jaehyun Kim ,
Kethinni G. Chittibabu ,
Mario J. Cazeca ,
Woohong Kim ,
Jayant Kumar  and
Sukant K. Tripathy
Jaehyun Kim
Affiliation:
Center for Advanced Materials, Department of Chemistry and Physics, University of Massachusetts, Lowell, MA, 01854, U.S.A.
Kethinni G. Chittibabu
Affiliation:
Molecular Technologies, Inc., Westford, MA, 01886, U.S.A.
Mario J. Cazeca
Affiliation:
Molecular Technologies, Inc., Westford, MA, 01886, U.S.A.
Woohong Kim
Affiliation:
Samsung Central Research Institute of Chemical Technology, Taejeon, 305–380, Korea
Jayant Kumar
Affiliation:
Center for Advanced Materials, Department of Chemistry and Physics, University of Massachusetts, Lowell, MA, 01854, U.S.A.
Sukant K. Tripathy
Affiliation:
Center for Advanced Materials, Department of Chemistry and Physics, University of Massachusetts, Lowell, MA, 01854, U.S.A.
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Abstract

Multilayer films were fabricated employing a new layer-by-layer complexation technique by alternatively dipping substrates in solutions of macromolecular ligands and Eu3+ ions. A luminescent poly[2-(3-thienyl)ethanol hydroxycarbonyl-methyl urethane] (H-PURET) was prepared by hydrolysis of thiophene polymer, poly[2-(3-thienyl)ethanol butoxycarbonyl-methyl urethane] (PURET), which was developed in our laboratory. H-PURET was used as macromolecular ligands. The multilayer deposition was monitored using UV-visible spectroscopy. As the number of bilayers increases, the absorption due to the polymer increases. The multilayer films were characterized by infrared and fluorescence spectroscopic techniques. Electroluminescence brightness easily obtained from the multilayer film of conjugated polymer-Eu3+ complex was measured to be about 40nW.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 527
Copyright
Copyright © Materials Research Society 1998

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