Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures
Abstract
:1. Introduction
2. Results and Discussion
2.1. Micellization and Adsorption Properties
2.2. Micellar Size
2.3. Micellar Microstructure
3. Experimental Section
3.1. Materials
3.2. Methods
3.2.1. Surface Tension
3.2.2. Light Scattering
3.2.3. Fluorescence Spectroscopy
4. Conclusions
Acknowledgments
Conflict of Interest
References
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EG (% wt) | (cmc) (mM) a | −ΔGmic0 (kJ/mol) | Γmax 103 (mmol/m2) | Amin Å2/molecule | Πcmc (mN/m) | −ΔGads0 (kJ/mol) |
---|---|---|---|---|---|---|
0 | 7.9 (8.7) | 22.0 | 3.1 | 52.9 | 42.3 | 35.3 |
10 | 9.4 (10.5) | 21.4 | 3.4 | 49.4 | 37.7 | 32.5 |
20 | 10.1 (12.6) | 21.0 | 3.6 | 46.5 | 33.8 | 30.5 |
30 | 13.2 (16.0) | 20.2 | 3.5 | 48.0 | 30.4 | 28.9 |
40 | 18.1 (22.3) | 19.2 | 4.0 | 41.6 | 27.2 | 26.0 |
EG (% wt) | η (mPas) | Nagg | R0 (nm) | −A2 × 109 (mol m3 g−2) | −kD (L g−1) | REFF (nm) | ρ (g cm−3) |
---|---|---|---|---|---|---|---|
0 | 0.89 | 114 | 3.5 | 7.3 | 0.75 | 9.6 | 0.32 |
10 | 1.13 | 99 | 3.6 | 4.7 | 0.27 | 7.6 | 0.26 |
20 | 1.34 | 95 | 2.9 | 2.6 | 0.09 | 6.0 | 0.48 |
30 | 1.82 | 82 | 2.7 | 0.6 | 0.03 | 3.4 | 0.51 |
40 | 2.42 | 45 | 2.0 | 0.7 | 0.02 | 2.4 | 0.69 |
%wt EG | r0 | β | τslow (ns) | τfast (ns) | χ2 | 〈τr〉 (ns) |
---|---|---|---|---|---|---|
0 | 0.288 | 0.40 ± 0.01 | 3.77 ± 0.12 | 0.66 ± 0.01 | 1.04 | 1.90 ± 0.18 |
10 | 0.281 | 0.41 ± 0.01 | 3.63 ± 0.11 | 0.61 ± 0.01 | 1.05 | 1.90 ± 0.17 |
20 | 0.280 | 0.41 ± 0.01 | 3.39 ± 0.11 | 0.62 ± 0.01 | 1.03 | 1.76 ± 0.16 |
30 | 0.274 | 0.41 ± 0.01 | 3.22 ± 0.10 | 0.59 ± 0.01 | 1.16 | 1.66 ± 0.17 |
40 | 0.244 | 0.40 ± 0.02 | 2.93 ± 0.10 | 0.52 ± 0.01 | 1.04 | 1.45 ± 0.16 |
%wt EG | 〈τr〉 (ns) | lang;τr〉P (ns) | τM (ns) | ηm (mPa s) |
---|---|---|---|---|
0 | 1.90 | 1.90 | 1800 | 32.6 |
10 | 1.90 | 1.90 | 1181 | 32.6 |
20 | 1.76 | 1.78 | 131.5 | 30.5 |
30 | 1.66 | 1.72 | 50.6 | 29.5 |
40 | 1.45 | 1.57 | 19.7 | 26.9 |
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Ruiz, C.C.; Molina-Bolívar, J.A.; Hierrezuelo, J.M.; Liger, E. Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures. Int. J. Mol. Sci. 2013, 14, 3228-3253. https://doi.org/10.3390/ijms14023228
Ruiz CC, Molina-Bolívar JA, Hierrezuelo JM, Liger E. Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures. International Journal of Molecular Sciences. 2013; 14(2):3228-3253. https://doi.org/10.3390/ijms14023228
Chicago/Turabian StyleRuiz, Cristóbal Carnero, José Antonio Molina-Bolívar, José Manuel Hierrezuelo, and Esperanza Liger. 2013. "Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures" International Journal of Molecular Sciences 14, no. 2: 3228-3253. https://doi.org/10.3390/ijms14023228