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zuodg

铁杆木虫 (正式写手)

有为青年

翻译EPI: 180
应助: 5 (幼儿园)
贵宾: 0.015
金币: 6765.2
散金: 48
红花: 18
帖子: 500
在线: 285.5小时
虫号: 1055187
注册: 2010-07-10
性别: GG
专业: 外国语言

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sltmac(金币+1): 谢谢交流~ 2011-06-07 22:25:46
0733110117(金币+30, 翻译EPI+1): 你真是太厉害了！非常谢谢你的帮助~！24小时后，如果老师没什么意见了，我把剩下的再给你~！ 2011-06-07 23:19:22
sltmac(金币+20): 3Q 2011-06-10 15:35:02

This work mainly investigates synthetic methods of cucurbituril under different conditions and preliminary exploration of synthesis of hydroxylcucurbituril and its properties. First, glycoluril was prepared with urea and glyoxal under acidic conditions. Then cucurbituril was obtained through dilute sulfuric acid catalysis, concentrate sulfuric acid catalysis and concentrate sulfuric acid-dehydration with glycoluril and formal as substrates. Cucurbituril was then heated with potassium persulfate, and then treated with alkaloid solutions, acetone and dilute water, respectively. In this way, hydroxylcucurbituril was obtained. Compounds were characterized with FT-IR. Results from TLC and HPLC jointly indicated high ratio of objective compounds with high purity. Effects of hydroxylcucurbituril on fluorescein had been evaluated with fluorescence spectroscopy, electrochemical analysis. Research indicated that with increase of hydroxylcucurbituril, fluorescence intensity of inclusion complex of hydroxylcucurbituril and fluorescein tended to decrease.

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