Temperature dependence of pyrene fluorescence spectra in aqueous solutions of CnEm (C14E7, C16E7, and C16E6) nonionic surfactant micelles

2006 ◽  
Vol 182 (2) ◽  
pp. 151-157 ◽  
Author(s):  
Chikako Honda ◽  
Yumi Katsumata ◽  
Risa Yasutome ◽  
Sanae Yamazaki ◽  
Shigeaki Ishii ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Temperature Dependence ◽  
Nonionic Surfactant ◽  
Fluorescence Spectra ◽  
Surfactant Micelles ◽  
Pyrene Fluorescence

scholarly journals Evidence by Gel Filtration for Solubilization of NAA by Nonionic Surfactant Micelles

HortScience ◽  
1990 ◽  
Vol 25 (10) ◽  
pp. 1302-1303 ◽  
Author(s):  
Antonio Heredia ◽  
Martin J. Bukovac
Keyword(s):  
Acetic Acid ◽  
Aqueous Solutions ◽  
Nonionic Surfactant ◽  
Nonionic Surfactants ◽  
Gel Filtration ◽  
Deposit Formation ◽  
Gel Filtration Chromatography ◽  
Surfactant Micelles ◽  
Spray Solution ◽  
Triton X

Micelles of two nonionic surfactants (Triton X-114 and Neodol 91) were shown by gel filtration chromatography to solubilize nondissociated NAA molecules in aqueous solutions. Micelle solubilization of nonpolar active ingredients in aqueous spray systems alters the distribution of the chemical in the spray solution and may influence chemical deposit formation and penetration characteristics. Chemical names used: 2-(1-naphthyl)acetic acid (NAA), octylphenoxy polyethoxylate-7.5 POE (Triton X-114), linear alcohol (C9-11) polyethoxylate-6 POE (Neodol 91).

The Association of Picrate Ions with Amphiphilic Cations in Water and Aqueous Solutions of Nonionic Surfactant and β-Cyclodextrin

2005 ◽  
Vol 67 (6) ◽  
pp. 727-733 ◽  
Author(s):  
A. B. Ziyatdinova ◽  
S. A. Mirsaizyanova ◽  
Z. A. Saprykova ◽  
R. R. Amirov
Keyword(s):  
Aqueous Solutions ◽  
Nonionic Surfactant

Effect of ring substituents on the fluorescence spectra of substituted diarylcarbenes

1988 ◽  
Vol 66 (3) ◽  
pp. 491-494 ◽  
Author(s):  
J. C. Scaiano ◽  
D. Weir
Keyword(s):  
Free Radical ◽  
Temperature Dependence ◽  
Fluorescence Spectra ◽  
Excellent Correlation ◽  
Emission Data ◽  
The Difference

The fluorescence spectra of a series of ring-substituted diarylcarbenes have been examined. The solution spectra are generally red shifted by 25–30 nm with respect to the band positions in matrices at 77 K. The difference is believed to reflect emission from non-relaxed conformations at 77 K. Both electron-withdrawing and -donating substituents lead to red shifts in the emission. These shifts are essentially additive, and the carbene emission data show an excellent correlation with free radical fluorescence data for the corresponding diarylmethyl radicals. The temperature dependence of excited carbene lifetimes have been examined for a few representative examples.

Temperature dependence of thermal diffusion for aqueous solutions of monosaccharides, oligosaccharides, and polysaccharides

2012 ◽  
Vol 14 (29) ◽  
pp. 10147 ◽  
Author(s):  
Yuki Kishikawa ◽  
Haruka Shinohara ◽  
Kousaku Maeda ◽  
Yoshiyuki Nakamura ◽  
Simone Wiegand ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Temperature Dependence ◽  
Thermal Diffusion
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