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euphonium鐵桿木蟲 (著名寫手)
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[求助]
Fe3O4@CdTe@SiO2 的復合顆粒
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主要是參考這篇文獻進行合成: Core/shell fluorescent magnetic silica-coated composite nanoparticles for bioconjugation Fe3O4的部分完全照文獻的條件制備;CdTe的話,因為之前自己有合成過一批,因此沒有參考文獻的方法,不過步驟幾乎差不多,只是文獻是用TGA而自己是用MPA,而最終厚度也是控制在4 mg/mL-1 至于包裹CdTe以及Fe3O4的步驟則是完全參照文獻: 50 ml cyclohexane, 10 ml TritonX-100, 8 ml n-hexanol, 500 μl CdTe stock solution, 500 μl Fe3 O4 stock solution, and 500 μl TEOS were added in a flask in turn under vigorous stirring. Thirty minutes after the microemulsion was formed, 150 μl ammonia aqueous solution was introduced to initiate the polymerization process. The silica growth was completed after 24 h of stirring. 實驗結(jié)果發(fā)現(xiàn)用磁鐵是可以吸附Fe3O4,不過卻沒有螢光,連澄清液的部份也沒有螢光,不知道有沒有朋友遇過一樣的情況?后來純化完之后溶于20 mL的純水,整個外觀看起來蠻黑的,猜想有沒有可能是Fe3O4的量加太多,導致螢光被遮蔽。 [ Last edited by euphonium on 2012-6-8 at 17:09 ] |
新蟲 (小有名氣)
木蟲 (著名寫手)

鐵桿木蟲 (著名寫手)
鐵桿木蟲 (著名寫手)
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