Abstract：Interaction of cucurbit[n]urils with two naphthol isomers and the influence of pH on the interaction were studied by using UV-Vis spectroscopy and fluorescence spectrophotometry. The experimental results revealed that cucurbit[8]urils always forms a 1∶1 complex with the naphthol isomers. However, UV-Vis spectroscopy and fluorescence spectrophotometry method showed no obvious interaction of cucurbit[6]urils and cucurbit[7]urils with naphthol isomers in all pH values. Formation constant of Kf was found to be 4.2×104 L·mol-1,1.6×104 L·mol-1 of 1-naphthol and 2-naphthol with cucurbit[8]urils respectively by using fluorescence spectrophotometry. Formation constant of Kf was found to be 4.2×104 L·mol-1,5.4×104 L·mol-1 of 1-naphthol and 2-naphthol with cucurbit[8]urils respectively by using UV-Vis spectroscopy. There is no interaction between cucurbit[8]urils and the naphthol isomers in strong alkalescent medium. The cucurbit[8]urils could include the guest with a 1∶1 ratio in acid and neutral medium.
王娅1,2,牟兰1*,薛赛凤1,陶朱1,祝黔江1 . 光谱法研究1-萘酚、2-萘酚与瓜环的包结作用[J]. 光谱学与光谱分析, 2007, 27(09): 1820-1825.
WANG Ya1,2, MU Lan1*, XUE Sai-feng1, TAO Zhu1, ZHU Qian-jiang1. Spectroscopic Study the Interaction of Cucurbit[n]urils with 1-Naphthol, 2-Naphthol. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(09): 1820-1825.
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