Controlled morphology and spin transition characteristics in self-assembling, linear Fe(II) complexes

Nobuo Kimizuka, Hiroyuki Matsukizono, Shoko Kume, Keita Kuroiwa

研究成果: 会議への寄与タイプ論文

抜粋

A novel family of lipophilic, photo-responsible supramolecular wires that contain 1D Fe(II) triazole complexes is developed. A triazole ligand 2 contains azobenzene group and it formed a 1D iron(II) complex Fe(2)3(BF 4)2, which is soluble in common organic solvents. Atomic force microscopy (AFM) of the sample in dilute chloroform solutions showed flexible molecular wires (length, 10 - 100 nm, width, ca. 7 nm). On the other hand, it formed aggregates and gave organogels when dispersed in chlorocyclohexane. The yellow chlorocyclohexane gel is liquefied by UV-irradiation and an orange-colored solution was obtained. This is ascribed to the trans-to-cis photoisomerization of azobenzene units, which is accompanied by morphological changes to undulated molecular wires. Visible-light illumination of the Fe(cw-2)3(BF4)2 complex reversibly afforded Fe(trans-2)3(BF4)2 complex, which is accompanied by physical gelation. Thus, the molecular wire of Fe(2) 3(BF4)2 show reversible conformational changes with maintaining the linear complex structures. This is the first example of photo-responsive 1D metal complexes which are dispersed in solution.

元の言語英語
ページ3067-3068
ページ数2
出版物ステータス出版済み - 12 1 2006
イベント55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, 日本
継続期間: 9 20 20069 22 2006

その他

その他55th Society of Polymer Science Japan Symposium on Macromolecules
日本
Toyama
期間9/20/069/22/06

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Kimizuka, N., Matsukizono, H., Kume, S., & Kuroiwa, K. (2006). Controlled morphology and spin transition characteristics in self-assembling, linear Fe(II) complexes. 3067-3068. 論文発表場所 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 日本.