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Interaction of Sulfonated Calixarenes with Rhodamine B and its Application to Determine Acetylcholine in a Real Neutral Aqueous Medium
作者:Yongjun Zhang, Weixiao Cao,* Jian Xu
關鍵字:host-guest chemistry
論文來源:期刊
具體來源:Chinese Journal of Chemisty, 2002, 20, 322-326.
發表時間:2002年

 Complexation between Rhodamine B (RB) and sulfonated calix [n] arenes ( SCnA) were studied by means of UV-vis spectroscopy and fluorescence spectroscopy. In the presence of sulfonated calix [n] arenes, the absorption band of Rhodamine B shifts to longer wavelength and its intensity decreases. The formation of a host-guest type complex also results in the fluorescence quenching of Rhodamine B. The association constants for the RB/SCnA complexes increase in the order of SC4A < SC6A < SC8A and show dependence on the size of the cavities of the calixarenes. The fluorescence is selectively regenerated by adding acetylcholine. Based on this observation, a method to determine acetylcholine in a real neutral aqueous medium was developed.

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