J. S. Liu, N. Jiang, J. Ma and X. Z. Du. Insight into unusual downfield NMR shifts in the inclusion complex of acridine or- ange with cucurbituril. European Journal of Organic Che- mistry, 2009, 2009(29): 4931-4938.
葫芦脲对孔雀石绿的包结作用及应用Inclusion Complex of Malachite Green with Cucurbituril and Detection of Malachite Green using Cucurbituril
唐冬宝, 孙军勇, 武凯, 李涛, 周运友
荧光, 葫芦脲, 孔雀石绿, 包结作用, 稳定常数Fluorescence; Cucurbituril; Malachite Green; Inclusion Interaction; Stability Constants of Complexation
《Advances in Analytical Chemistry》, Vol.2 No.2, 2012-05-29
利用荧光光谱滴定法研究孔雀石绿和葫芦脲的包结作用，在一定的浓度范围内，我们发现孔雀石绿的荧光强度随着葫芦脲的浓度的增加而增加，同时，最大发射峰的位置发生了一定程度的红移。我们利用了紫外–可见吸收光谱、荧光光谱、IR、1H NMR和量子化学计算等方法研究了水溶液中孔雀石绿与葫芦脲之间的包结行为，探讨了MG-CB的包结机理。相关的结果表明孔雀石绿与葫芦之间形成1:1的包结络合物。该方法的检出限是4.2 × 10–8 mol·L–1。
The interaction between malachite green (MG) and cucurbituril (CB7) had been studied based on fluores-cence and 1H NMR spectroscopic results. The interaction mechanism was also discussed concretely based on 1H NMR results. The fluorescence intensity of malachite green (MG) enhanced strongly and a slight red shift was observed at the maximum emission peak when added into cucurbituril. We had found that the formation of the complex at a 1:1 complex stoichiometry and the association constant was calculated by applying a deduced equation. The thermody-namic parameters such as ΔH and ΔS values were obtained according to Van’t Hoff equation, respectively. We prepared the solid inclusion complex from co-evaporation method and characterised it by 1H NMR、IR. For the efficient detection of malachite green, the limit of detection was 4.2 × 10–8 mol·L–1 from our experiments which will make our method applied to detect the malachite green in sewage effectively.