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senyingtower

金虫 (小有名气)

[求助] RAFT末端三硫基团的去除 已有1人参与

请问大家谁去除过RAFT聚合得到产物的末端的三硫键的呀,为了让聚合物没有颜色
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忧郁夜

木虫 (正式写手)

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senyingtower: 金币+2 2014-01-02 12:59:15
加入丁胺、过量的AIBN都可以
好好学习,天天向上
2楼2014-01-02 12:23:08
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senyingtower

金虫 (小有名气)

引用回帖:
2楼: Originally posted by 忧郁夜 at 2014-01-02 12:23:08
加入丁胺、过量的AIBN都可以

只加入AIBN就可以吗?温度80℃吗?能具体一点吗?
3楼2014-01-02 13:00:33
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忧郁夜

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senyingtower: 金币+8 2014-01-02 19:38:44
引用回帖:
3楼: Originally posted by senyingtower at 2014-01-02 13:00:33
只加入AIBN就可以吗?温度80℃吗?能具体一点吗?...

The mixture was precipitated into an excess of diethyl ether to generate pale residues, the residues were dissolved in DCM and precipitated into diethyl ether. The product was  further  treated  with  an  excess  of  AIBN  (20  equiv.)  in  DCM  to  remove  terminal
trithiocarbonate moieties. After stirring at 60 °C for 6 h, the solution was precipitated into an excess of diethyl ether, and the above dissolution-precipitation cycle was repeated for three times.
好好学习,天天向上
4楼2014-01-02 17:29:41
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senyingtower

金虫 (小有名气)

引用回帖:
4楼: Originally posted by 忧郁夜 at 2014-01-02 17:29:41
The mixture was precipitated into an excess of diethyl ether to generate pale residues, the residues were dissolved in DCM and precipitated into diethyl ether. The product was  further  treated  wit ...

谢谢了
5楼2014-01-02 19:38:41
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