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Updated: Jul 9, 2026

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
Published on: April 1, 2013
[Spectroscopic study the interaction of cucurbit[n]urils with 1-naphthol, 2-naphthol]
Ya Wang1, Lan Mu, Sai-Feng Xue
1College of Science, Guizhou University, Guiyang 550025, China.
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 x 10(4) L x mol(-1), 1.6 x 10(4) L x 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 x 10(4) L x mol(-1), 5.4 x 10(4) L x 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.
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