Fluorimetric study of water–ethanol interaction and its effect on the micellisation of sodium dodecyl sulphate in the presence of bovine serum albumin
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- 作者：Nipamanjari Deb ; Sanjib Bagchi ; Asok K. Mukherjee
- 关键词：Ethanol– ; water interaction ; π ; * parameter ; Bovine serum albumin ; Sodium dodecyl sulphate ; Tryptophan fluorescence
- 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
- 出版年：2009
- 出版时间：15 July 2009
- 年：2009
- 卷：73
- 期：2
- 页码：370-373
- 全文大小：267 K
文摘
The model for self-association of ethanol in water which was established earlier by compressibility and infrared absorption measurements, has been further supported in the present work by monitoring fluorimetrically the variation of the solvatochromic Kamlet–Taft π* parameter of ethanol–water mixtures over the entire mole fraction range. This model has been used to interpret the variation of the critical micellisation concentration (cmc) of sodium dodecyl sulphate in the presence of bovine serum albumin (BSA) in aqueous ethanol mixtures (as obtained from the tryptophan fluorescence intensity of BSA) in low ethanol mole fraction range.