Novel Viscoelastic Systems from Azobenzene Dye and Cationic Surfactant Binary Mixtures: Effect of Surfactant Chain Length
Novel Viscoelastic Systems from Azobenzene Dye and Cationic Surfactant Binary Mixtures: Effect of Surfactant Chain Length
复制标题
偶氮苯染料和阳离子表面活性剂二元混合物的新型粘弹性体系：表面活性剂链长的影响
DOI：
10.1080/01932691.2011.646616
复制
发表时间：
2013-01
影响因子：
2.2
通讯作者：
中科院分区：
文献类型：
--
作者：
利用光散射和粘度法研究了光敏染料4-[（E）-苯基二氮烯基]苯甲酸钠（AZONa）在烷基三甲基溴化铵（DTAB、TTAB、CTAB和OTAB）溶液中诱导胶束生长的作用。在[AZONa]/[表面活性剂]的固定摩尔比下，发现在将[表面活性剂]增加至约20 mM以上时粘度降低在TTAB至OTAB溶液中是常见的。Cryo-TEM结果表明，胶束体系粘度的降低主要是由于胶束从缠结的线性胶束向多连通的饱和网络蠕虫状胶束的转变。紫外-可见光谱表明，AZONa与OTAB胶束发生了强烈的相互作用，吸收峰的移动和吸收强度的变化表明AZONa与OTAB胶束发生了结合。1H NMR证实了AZONa对栅栏层的增溶作用和胶束的生长，如从峰的移动和加宽所揭示的。
Sodium 4-[(E)-phenyldiazenyl] benzoate (AZONa), a photo-responsive dye, induced micellar growth in alkyl-trimethylammonium bromide (dodecyl-, DTAB; tetradecyl-, TTAB; cetyl-, CTAB and octadecyl-, OTAB) solutions was investigated using light scattering and viscosity. The viscosity decrease upon increasing [surfactant] to above about 20 mM was found to be common from TTAB to OTAB solutions at fixed mole ratio of [AZONa]/[surfactant]. Cryo-TEM demonstrated that the decrease of viscosity was attributed to the entangled linear to multi-connected saturated network wormlike micelles transition. UV-vis spectra showed that AZONa interacted strongly with OTAB as revealed from both the shifting of absorbance peak and the variation of absorbance intensity, which suggest the binding of AZONa to OTAB micelles. 1H NMR confirmed the solubilization of AZONa to the palisade layer and growth of micelles upon increasing [AZONa] as revealed from the shifting and broadening of peaks.
登录
查看更多内容
DOI：
10.1002/chin.199129311
发表时间：
1991-04
期刊：
ChemInform
影响因子：
--
作者：
E. Barni;P. Savarino;G. Viscardi
通讯作者：
E. Barni;P. Savarino;G. Viscardi
影响因子：
3.9
作者：
KERN, F;LEQUEUX, F;CANDAU, SJ
通讯作者：
CANDAU, SJ
影响因子：
9.9
作者：
Li Li-Li;Yi Yang;Jinfeng Dong;Xuefeng Li
通讯作者：
Li Li-Li;Yi Yang;Jinfeng Dong;Xuefeng Li
影响因子：
3.9
作者：
S. Amin;Thomas W. Kermis;R. V. Zanten;and Stephen J. Dees;J. V. Zanten
通讯作者：
S. Amin;Thomas W. Kermis;R. V. Zanten;and Stephen J. Dees;J. V. Zanten
影响因子：
--
作者：
CLAUSEN, TM;VINSON, PK;MILLER, WG
通讯作者：
MILLER, WG