期刊
CHEMICAL PHYSICS LETTERS
卷 476, 期 4-6, 页码 244-248出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2009.06.023
关键词
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Fluorescence response of pyrene has been studied in the presence of polyacrylic acid (PAA) and brij surfactant micelles with Cu2+ as an ionic quencher. The quenched pyrene emission is completely recovered with the addition of PAA (conc. 2.4 x 10(-4) M) for brij 35 (poly-oxyethylene-23 lauryl ether) micelle indicating PAA-Cu2+ complex formation at the micelle-water interface. This could be due to the relatively easier accessibility of PAA polymer chains near poly-oxyethylene chain of brij 35 micelle compared to brij 30 (poly-oxyethylene-4 lauryl ether) micelle. The interaction between brij-micelle and polymer is confirmed by turbidimetry and NMR spectroscopy. (C) 2009 Elsevier B.V. All rights reserved.
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