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タイトル :Size control for two-dimensional iron oxide nanodots derived from biological molecules
著者 :Tominaga, Masato
Matsumoto, Manabu
Soejima, Kazuki
Taniguchi, Isao
刊行年月日 :2006-7-15
収録雑誌名 :Journal of Colloid and Interface Science
巻 :299
号 :2
開始ページ :761
終了ページ :765
要約(Abstract) :We demonstrated the fabrication of size controlled two-dimensional iron oxide nano-dots derived from the heat-treatment of ferritin molecules self-immobilized on modified silicon surfaces. Ferritin molecules were immobilized onto 3-aminopropyltrimethoxysilane (3-APMS) modified silicon surfaces by electrostatic interactions between negatively charged amino acids of ferritin molecules and amino terminal functional groups of 3-APMS. Heat-treatments were performed at 400 °C for 60 min to fabricate two-dimensional nano-dots based on ferritin cores, a heat-treatment at was performed. XPS and FT-IR results clearly indicate that ferritin shells were composed of amino acids and 3-APMS modifiers on silicon surfaces were eliminated by heattreatment. Nano-dots on substrate surfaces corresponded to iron oxides. The size of nano-dots was tunable in the range of 0 ~ 5 (± 0.75) nm by in situ reactions of iron ion chelators with ferritin molecules immobilized on substrates before heat-treatment.
収録種別 :雑誌掲載論文
出版社(者) :Elsevier
権利(Rights) :© 2006 Elsevier Inc.
URI :http://hdl.handle.net/2298/10572
関連 :http://dx.doi.org/10.1016/j.jcis.2006.02.022
このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/2298/10572