Silica-[Fe(bpy)3]2+ composite particles with photo-responsive change of color and magnetic property

Chikashi Nakanishi, Saori Ikeda, Tetsuhiko Isobe, Mamoru Senna

研究成果: Article

4 引用 (Scopus)

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Photo-induced complex formation of tris-2,2′-bipyridine iron(II) complex ([Fe(bpy)3]2+) from the mixture of FeCl3 and 2,2′-bipyridine was achieved in silica gel containing 150-300 μm silica particles, derived from a complex emulsion with HCl aqueous solution and tetraethyl orthosilicate (TEOS). More than 95% of Fe(III) and 2,2′-bipyridine were incorporated in silica particles. Yellow-red color change, due to [Fe(bpy)3]2+, was observed by irradiation with 365 nm UV beam at 0.3 mW cm-2 for 120 s. The complex formation accompanies simultaneous spin transition from the high-spin state of Fe(III) to the low-spin state of Fe(II).

元の言語English
ページ(範囲)647-651
ページ数5
ジャーナルMaterials Research Bulletin
37
発行部数4
DOI
出版物ステータスPublished - 2002 3 25

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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