Determination of the Critical Micelle Concentration of Triton X-100 Using the Compound 3-(benzoxazol-2-yl)-7-(N,N-diethylamino)chromen-2-one as Fluorescent Probe

被引:2
作者
da Hora Machado, Antonio Eduardo [1 ]
Moises de Oliveira, Hueder Paulo [2 ]
dos Santos, Lidiaine Maria [1 ]
Alves, Higor de Oliveira [1 ]
Machado, Werick Alves [1 ]
Caixeta, Bruno Pontes [1 ]
da Silva, Tatiana Aparecida [1 ]
da Silva Araujo, Diesley Martins [1 ]
机构
[1] Univ Fed Uberlandia, Inst Quim, Lab Fotoquim & Ciencia Mat, POB 593, BR-38400900 Uberlandia, MG, Brazil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Av Estados 5001, BR-09210580 Santo Andre, SP, Brazil
来源
ORBITAL-THE ELECTRONIC JOURNAL OF CHEMISTRY | 2016年 / 8卷 / 06期
关键词
critical micelle concentration; Triton X-100; extrinsic fluorescence; 3-(benzoxazol-2-yl)-7-(N; N-diethylamino)chromen-2-one; polarity; viscosity;
D O I
10.17807/orbital.v0i0.923
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In the present study we estimated the Critical Micelle Concentration (CMC) of Triton X-100 in an aqueous buffered medium (PBS buffer, pH 7.4), using 3-(benzoxazol-2-yl)-7-(N,N-diethylamino)chromen-2-one (BDC), a push-pull compound, as extrinsic fluorescence probe. The CMC value found, 0.33 mmol L-1, shows good agreement with data from literature obtained using the fluorescence probe technique. Additionally, the polarity, in terms of the ET(30) scale, and the viscosity of the micelle microenvironment in which the probe is preferentially allocated, was estimated as being 46.9 kcal mol(-1) and 70.3 cP, respectively, confirming that this microdomain is polar and highly viscous, with characteristics of polyethylene glycol groups consisting in the palisade layer at the micelle-water interface.
引用
收藏
页码:329 / 333
页数:5
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