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jge163

新虫 (初入文坛)

[求助] 利用酸性催化TEOS水解进行SiO2包覆实验

新手,想利用SiO2包覆做成纳米粒子,但不知道怎么控制条件,follow的下面这篇文献(dx.doi.org/10.1021/ja3003638 | J. Am. Chem. Soc. 2012, 134, 5390−5397),总是做不出来
请问这个酸度多少比较合适?
需要控制温度吗?
反应完全后应该是透明澄清的液体?
是不是有什么需要注意的地方?或者有更好的方法吗?
In a 20 mL glass scintillation vial, 2.0 g of Pluronic F127, 1.0 mg (1.56 ×
10−6 mol) of PdOEP, and 10 mg (3.03 × 10−5 mol) DPA were carefully
soluble in toluene. The solvent was evaporated from the homogeneous
lavender organic solution by means of a gently nitrogen flow and
subsequently under vacuum. The solid residue was then dissolved under
magnetic stirring with 100 mL of HCl (0.85 mol L−1). TEOS (2 mL) was
then added to the resulting aqueous solution followed by DEDMS
(450 μL, 2.1 mmol) after 6 h. The mixture was kept under stirring for
48 h at 25 °C before dialysis/ultrafiltration treatments and measurements.
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jge163

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求助!!!
2楼2014-04-10 08:12:48
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