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Molecular Self-Assembly of Fe3O4/Polyimide Nanocomposite Films (I)

Published online by Cambridge University Press:  10 February 2011

Yanjing Liu ,
Anbo Wang ,
Richard O. Claus  and
Eric Jiang
Yanjing Liu
Affiliation:
Fiber & Electro-Optics Research Center, Bradley Department of Electrical Engineering Virginia Polytechnic, Institute and State University, Blacksburg, VA 24061–0356, [email protected]
Anbo Wang
Affiliation:
Fiber & Electro-Optics Research Center, Bradley Department of Electrical Engineering Virginia Polytechnic, Institute and State University, Blacksburg, VA 24061–0356, [email protected]
Richard O. Claus
Affiliation:
Fiber & Electro-Optics Research Center, Bradley Department of Electrical Engineering Virginia Polytechnic, Institute and State University, Blacksburg, VA 24061–0356, [email protected]
Eric Jiang
Affiliation:
Bio-Rad, Digilab Division, 237 Putnam Avenue, Cambridge, MA 02139
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Abstract

Layer-by-layer molecular self-assembly of nanosized magnetite (Fe3O4) particles and polyimide precursor molecules into multilayer ultrathin films has been accomplished on single crystal silicon and quartz substrates. This process involves the alternate dipping of a substrate into an aqueous solution of cationic polymer which coats on nanoscale Fe3O4 particles as a stabilizer followed by dipping into an aqueous solution of anionie polyimide precursor (polyamic acid salt, PAATEA). The growth process and the structure have been characterized using UV-vis spectroscopy, FT-IR, and scanning electron microscopy. The results demonstrate that well-ordered uniform monolayer and multilayer magnetic films have been formed on silicon and silica surfaces.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 475: Symposium M – Magnetic Ultrathin Films, Multilayers, and Surfaces – 1997 , 1997 , 39
Copyright
Copyright © Materials Research Society 1997

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