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0733110117木虫 (小有名气)
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[求助]
急急急~！摘要汉译英，自己翻译改了两次了，老师说不行，大家帮下忙！
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摘 要 本课题主要研究了在不同条件下葫芦脲的合成方法并对其衍生物羟基葫芦脲的合成及其性能做了一些初步探索。首先以尿素和乙二醛为原料在酸性条件下制得甘脲，然后以甘脲和甲醛为原料分别用稀硫酸催化法、浓硫酸催化法、浓硫酸催化-除水法制得葫芦脲，用过二硫酸钾和所得的葫芦脲混合加热反应，将反应产物经碱性溶液、丙酮、蒸馏水处理后得到羟基葫芦脲。所得产物经红外光谱（FT-IR）表征，并结合薄层色谱（TLC）和高效液相色谱（HPLC）分析检测可知产品中含有大量高纯度的目标产物。然后利用荧光光谱法、电化学分析法对羟基葫芦脲对荧光素的包结作用进行了初步地探索，实验表明羟基葫芦脲和荧光素的包结物的荧光强度随羟基葫芦脲量的增多，呈现降低的趋势。 时间很急！！希望大家能快点给我答案！！ 谢谢了！ [ Last edited by 0733110117 on 2011-6-7 at 20:46 ] |
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zuodg
铁杆木虫 (正式写手)
有为青年
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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
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. |
2楼2011-06-07 22:15:41