Selective growth of magnetic nanoparticles in domains of block copolymer films, and in polyelectrolyte multilayers
Name
53088805-MIT.pdf
Description
Full printable version
Size
7.22 MB
Format
Adobe PDF
Checksum (MD5)
c56e7bf28542a09cc66b85f8b433ca9d
Author(s)
Abes, Jeff I., 1975-
Advisor(s)
Robert E. Cohen.
Date Issued
2003
Publisher
Massachusetts Institute of Technology
Abstract
Nonagglomerated cobalt, iron, iron-cobalt, and cobalt-nickel alloy nanoparticles, some of which exhibit significant room-temperature magnetic coercivity, have been produced by thermal decomposition of organometallic complexes in a bulk film of P(S-b-2VP). The particles are patterned on the nanoscale: they reside within the P2VP domains of the block copolymer morphology. These results are made possible by the selective sequestration of organometallic complexes into these domains in amounts sufficient to nucleate and grow substantial quantities of nanoparticles, some of which are larger than the size required for ferromagnetic behavior. Nonagglomerated metallic nanoparticles have also been produced inside polyelectrolyte films by the growth of palladium nucleating sites followed by the use of an electroless plating bath. Control of particle size and spatial distribution has been demonstrated. The effect of electroless bath chemistry on particle composition has been examined.
Description
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2003.
Includes bibliographical references.
Subjects
Chemical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
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