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Cited by 210

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Size and Surface Effects of Prussian Blue Nanoparticles Protected by Organic Polymers

Uemura, Takashi, Ohba, Masaaki, Kitagawa, Susumu·2004·Inorganic Chemistry

Abstract

Prussian blue (PB) nanoparticles protected by organic polymers such as poly(vinylpyrrolidone) (PVP) and poly(diallyldimethylammonium chloride) (PDDA) were prepared. Different experimental conditions (concentrations of Fe ions and feed ratios of Fe to the polymers) have been investigated to control the size of the PB nanoparticles. For example, the averaged dimensions of the PB nanoparticles were tuned from 12 to 27 nm by use of PVP in the different conditions. Addition of PDDA produced the PB nanoparticles with very small dimensions (5-8 nm) by an effective electrostatic interaction. We found that the surface environments of the PB nanoparticles affect the inherent properties of PB. The shifts of charge transfer (CT) absorptions from Fe(2+) to Fe(3+) in the PB nanoparticles resulted from the surface-protecting polymers. Especially, the PB nanoparticles with the PVP protection show high solubility in a variety of organic solvents and a solvent-dependent CT absorption. Measurement of the magnetic properties of the PB nanoparticles showed unprecedented size-dependency, surface effect, and superparamagnetic properties.

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Metadata

Authors
Uemura, T., Ohba, M., & Kitagawa, S.
Venue
Inorganic Chemistry
Published
2004-10-13
Volume
43
Issue
23
Pages
7339-7345
ISSN
  • 0020-1669 (ISSN-L)
  • 1520-510X
OpenAlex
W2079871184
Cited by
210
References
1
FWCI
7.36
Type
journal article
Language
en
Open access
closed

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