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poylmer (cell) 于 (Mon Aug 14 23:30:33 2006) 提到:
I prepared the polymer containing Pt-backbone. Purification needs several
times precipitation. I first dissolved it into dichloromethane and then
precipited it from methanol. It was good. When I tried to another
precipitation, it failed. No precipitation occured. The same conditions have
been applied. what could be the reasons? thanks.
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shaxixi (stupid) 于 (Tue
