Microparticles of Poly(methacrylic acid)-Gadolinium Ion Complex and Their Magnetic Force Microscopic Images

Tsuyoshi Michinobu, Norikatsu Sasao, Hiroyuki Nishide*

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

Modified poly(methacrylic acid) microparticles complexed with gadolinium(III) (Gd3+) ions were prepared in 100 nm. The emulsion terpolymerization of methacrylic acid, ethyl acrylate, and allyl methacrylate and the following complexation with Gd8+ ions yielded the polymer particles with different Gd3+ ion contents. Potentiometric titration of the complexation of the particle with Gd3+ ions indicated the formation of a very stable tris-carboxylate coordinate complex with the Gd 3+ ion. Electron spin resonance and IR spectra of the complexed particles were dependent on the Gd3+ ion content and the coordination environment in each particle. The microparticles dispersed on a mica substrate were subjected to atomic force microscopy (ATM), followed by magnetic force microscopy (MFM). AFM showed 100-nm-sized and monodispersed spherical images. The following MFM clearly provided strong magnetic responses exactly on the same particle positions, of which the images were also dependent on the Gd 3+ ion content in the particle. 2004 Wiley Periodicals, Inc.

本文言語English
ページ(範囲)1912-1918
ページ数7
ジャーナルJournal of Polymer Science, Part A: Polymer Chemistry
42
8
DOI
出版ステータスPublished - 2004 4 15

ASJC Scopus subject areas

  • ポリマーおよびプラスチック
  • 材料化学

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