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系列瓜环与甲基黄作用体系研究

Study on Interaction between Cucurbituril and Derivatives with Methyl Yellow System
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摘要 利用1H NMR技术和紫外-可见吸收光谱法考察了七元瓜环(Q[7])及对称四甲基六元瓜环(TMeQ[6])与甲基黄的分子包结作用,以及体系pH值对主客体作用的影响。结果表明,在体系pH约为1的条件下,Q[7]、TMeQ[6]与甲基黄均有明显的主客体相互作用,形成了1∶1的包结配合物,包结常数KQ[7]-g为3.54×106L.mol-1,KTMeQ[6]-g为2.50×106L.mol-1.测试了上述客体与不同瓜环作用体系的线性范围和检出限。 Interaction of methyl yellow and cucurbit [ n ] uril in aqueous solution were investigated by 1H NMR and UV-Vis absorption spectroscopy in details, and influence of pH in the interaction systems was studied. The results show that host-guest interaction was effected by the pH range and guanosine with Q[ n ] infomed 1：1 inclusion complexes at pH = 1, and calculate the equilibrium constant ： KQ[7]-g = 3.54 × 10^6 L · mol^-1, KTMeQ[6]-g =2.50 × 10^6 L·mol-1. Based on electronic absorption spectroscopy and higher sensitive and selective, the detection limit and linear range was determined in order to build up a new fluorimetric method for the analysis,
作者 张丽娜 薛赛凤 陶朱
机构地区 贵州省大环化学及超分子化学重点实验室 贵州大学应用化学研究所
出处 《贵州大学学报（自然科学版）》 2009年第6期39-42,47,共5页 Journal of Guizhou University:Natural Sciences
基金 国家自然科学基金项目(20767001) 春晖计划资助
关键词 瓜环 甲基黄 核磁共振技术 紫外-可见吸收光谱 Cucurbit[n]uril methyl yellow 1H NMR spectroscopy UV-is absorption spectroscopy
分类号 O657.32 [理学—分析化学]
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参考文献10

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二级参考文献28

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贵州大学学报（自然科学版）
2009年 第6期

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