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euphonium

铁杆木虫 (著名写手)

[求助] CdTe/SiO2 合成

?????
??????????CdTe???????SiO2?????????????????????@??īI????????
Silica-Coated CdTe Quantum Dots Functionalized with Thiols for Bioconjugation to IgG Proteins  ( http://pubs.acs.org/doi/pdf/10.1021/jp057435z )

To facilitate thicker silica shells, 300-400 uL of pure ethanol was added to decrease silicate solubility and then vortexed to ensure proper mixing.
Smaller particles (2.0-3.0 nm) tend to need less ethanol to force the precipitation of the particles out of solution. Larger particles (3.0-6.0 nm) took larger quantities of ethanol and increased time until turbidity is apparent.
???????????????@????????????????300-400 uL of pure ethanol????????????????????????????????(Dialysis)????????????????????????????????w?e???????????pure ethanol????????
????L????????????pure ethanol???x?????????QDs?????????m????pure ethanol???x?????????QDs??????????????|?????????????QDs????????^??l?F????????????]?к???????????????t??????????????????????

[ Last edited by euphonium on 2012-3-6 at 00:25 ]
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2楼2012-03-07 09:44:00
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1molNaCl

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【答案】应助回帖

这个叫选择性沉淀,用来提纯量子点的,应该是分离出粒径一样的来才对,乙醇加多了就全沉了,楼主慢慢摸索吧
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3楼2012-05-30 20:32:26
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euphonium

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引用回帖:
2楼: Originally posted by baiyal2000 at 2012-03-07 09:44:00
荧光会猝灭吗? 一般合成这个东西荧光猝灭的厉害。

不會,螢光還在。
4楼2012-06-06 11:48:58
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euphonium

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引用回帖:
3楼: Originally posted by 1molNaCl at 2012-05-30 20:32:26
这个叫选择性沉淀,用来提纯量子点的,应该是分离出粒径一样的来才对,乙醇加多了就全沉了,楼主慢慢摸索吧

的確不好拿捏>"<
5楼2012-06-06 11:49:50
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