Article ID Journal Published Year Pages File Type
1254370 Chinese Chemical Letters 2016 6 Pages PDF
Abstract

The inclusion behaviors of three native or modified CDs including β-CD, 2-hydroxypropyl-β-CD (2-Hp-β-CD) and 2,6-dimethyl-β-CD (Me-β-CD) toward 5-amino-6-methyl-2-benzimidazolone (AMBI) were comparatively investigated by NMR and fluorescence titration in combination with IR spectra, X-ray diffractometry and scanning electron microphotographs. The experimental results jointly demonstrated that the phenyl ring of AMBI entered into the cavity of the CDs and located close to the narrow rims accompanied by the formation of the 1:1 inclusion complex with large stability constant in aqueous solution. The introduction of the hydroxypropyl unit to the host improved the solubility, ultimately effecting an obvious promoting in the fluorescence intensity and the stability constant

Graphical abstractThe inclusion behaviors of three native or modified CDs including β-CD, 2-hydroxypropyl-β-CD (2-Hp-β-CD) and 2,6-dimethyl-β-CD (Me-β-CD) toward 5-amino-6-methyl-2-benzimidazolone (AMBI) were comparatively investigated by NMR and fluorescence titration in combination with IR spectra, X-ray diffractometry and scanning electron microphotographs. The experimental results jointly demonstrated that the phenyl ring of AMBI entered into the cavity of the CDs and located close to the narrow rims accompanied by the formation of the 1:1 inclusion complex with large stability constant in aqueous solution. The introduction of the hydroxypropyl unit to the host improved the solubility, ultimately effecting an obvious promoting in the fluorescence intensity and the stability constant.Figure optionsDownload full-size imageDownload as PowerPoint slide

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Physical Sciences and Engineering Chemistry Chemistry (General)
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