Photophysical evaluation of synergism from critical micelle temperature of mixed triblock polymer micelles

被引：8

作者：

Bakshi, Mandeep Singh ^{[1
]}

Kaur, Navjot ^{[1
]}

Mahajan, Rakesh Kumar ^{[1
]}

机构：

[1] Guru Nanak Dev Univ, Dept Chem, Amritsar 143005, Punjab, India

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2007年 / 186卷 / 2-3期

关键词：

triblock polymers; critical micelle temperature; mixed micelles; fluorescence measurements;

D O I：

10.1016/j.jphotochem.2006.09.004

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 critical micelle temperatures (cmt) of binary mixtures of triblock polymer (TBP) of poly(ethylene oxide) block poly(propylene oxide) block poly(ethylene oxide) (L64, P103, P84, P104) with different PPO/PEO ratios were determined employing the fluorescence measurements. The photophysical properties of pyrene due to its quenching as well as excimer formation in the interior of the mixed TBP micelles were studied and explained on the basis of stability of the mixed micelles. It was observed that the mixed micelle formation between the unlike components of P 103 + L64 and P 103 + P84 mixtures formed due to the attractive interactions and which raised from the mutual compatible arrangement among the unlike TBP monomers in the mixed state so as to minimize the steric hindrances. The results were fully supported by the viscosity measurements. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：349 / 356

页数：8

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