Interaction of pyrene-1-carboxaldehyde with micelles and mixed micelles of polyoxyethylene nonyl phenol (Igepal): A spectroscopic study

被引：23

作者：

Banerjee, Paltu ^{[1
]}

Chatterjee, Suian ^{[1
]}

Pramanik, Smritimoy ^{[1
]}

Bhattacharya, Subhash Chandra ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Chem, Kolkata 700032, W Bengal, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 302卷 / 1-3期

关键词：

critical micellar concentration; aggregation number; mixed micelle; association constant;

D O I：

10.1016/j.colsurfa.2007.01.038

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The absorption and steady-state fluorescence of a non-amphiphilic derivative of pyrene, Pyrene-1-Carboxaldehyde (1-PyCHO) is sensitive to the probe's environment. Association of the surfactants in aqueous medium as micelles and mixed micelles has been studied from the photophysical changes of 1-PyCHO in these media. The physicochemical characteristics of the micelles, i.e. CMC, aggregation number have been determined. The obtained CMC values from different methods are close to each other. The association constants of the 1-PyCHO molecules with the non-ionic micelle of 1gepal and location of the fluorophore in the micellar environment have been determined. Micropolarity of Igepal micelle and Igepal/Igepal mixed micelle surrounding 1-PyCHO has been ascertained comparing the shift in fluorescence maximum with E-T(30) values of standard solutions. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：44 / 50

页数：7

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