Photoresponsive microemulsions

被引：59

作者：

Eastoe, J ^{[1
]}

Sanchez-Dominguez, M

Cumber, H

Burnett, G

Wyatt, P

Heenan, RK

机构：

[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

[2] ISIS, CLRC, Rutherford Appleton Lab, Chilton OX11 0QX, Oxon, England

来源：

LANGMUIR | 2003年 / 19卷 / 17期

关键词：

D O I：

10.1021/la0349830

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photoresponsive microemulsions have been made by addition of a photodestructible surfactant, sodium 4-hexylphenylazosulfonate (1), to AOT-stabilized water-in-heptane phases. Exposure of these samples to UV light led to changes in phase stability and droplet size, owing to breakdown of 1. Small-angle neutron scattering was used to follow this UV-induced shrinkage of the water nanodroplets: a maximum volume decrease was found to be in the order of 60%. Proton NMR of an UV-irradiated microemulsion shows that around 90% of the added 1 decomposes, to yield a mixture of 4-hexylphenol (similar to37%) and hexylbenzene (52%).

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页码：6579 / 6581

页数：3

相关论文

共 14 条

[1] Microemulsion breakdown by pervaporation technique:: the cyclohexane/water/n-butanol/sodium dodecylsulfate system [J].

Aouak, T ;

Moulay, S ;

Hadj-Ziane, A .

JOURNAL OF MEMBRANE SCIENCE, 2000, 173 (02) :149-157

[2] Interfacial compositions and phase structures in mixed surfactant microemulsions [J].

Bumajdad, A ;

Eastoe, J ;

Griffiths, P ;

Steytler, DC ;

Heenan, RK ;

Lu, JR ;

Timmins, P .

LANGMUIR, 1999, 15 (16) :5271-5278

[3] TAR SAND EXTRACTIONS WITH MICROEMULSIONS .1. THE DISSOLUTION OF LIGHT-HYDROCARBONS BY MICROEMULSIONS USING 2-BUTOXYETHANOL AND DIETHYLMETHYLAMINE AS COSURFACTANTS [J].

DESNOYERS, JE ;

QUIRION, F ;

HETU, D ;

PERRON, G .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1983, 61 (05) :672-679

[4] Synthesis, characterization and applications of azo-containing photodestructible surfactants [J].

Dunkin, IR ;

Gittinger, A ;

Sherrington, DC ;

Whittaker, P .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1996, (09) :1837-1842

[5]

HAZBUN EA, 1988, Patent No. 4770670

[6]

HEENAN RK, 1989, RAL89129 CCLRC

[7] Deposition of platinum nanoparticles, synthesized in water-in-oil microemulsions, on alumina supports [J].

Ingelsten, HH ;

Béziat, JC ;

Bergkvist, K ;

Palmiqvist, A ;

Skoglundh, M ;

Hu, QH ;

Falk, LKL ;

Holmberg, K .

LANGMUIR, 2002, 18 (05) :1811-1818

[8] DETERGENT-LESS WATER-OIL MICROEMULSIONS COMPOSED OF HEXANE, WATER, AND 2-PROPANOL .2. NUCLEAR MAGNETIC-RESONANCE STUDIES, EFFECT OF ADDED NACL [J].

KEISER, BA ;

VARIE, D ;

BARDEN, RE ;

HOLT, SL .

JOURNAL OF PHYSICAL CHEMISTRY, 1979, 83 (10) :1276-1280

[9] Light decomposable emulsifiers: Application of alkyl-substituted aromatic azosulfonates in emulsion polymerization [J].

Mezger, T ;

Nuyken, O ;

Meindl, K ;

Wokaun, A .

PROGRESS IN ORGANIC COATINGS, 1996, 29 (1-4) :147-157

[10] What is so special about aerosol-OT? 2. Microemulsion systems [J].

Nave, S ;

Eastoe, J ;

Heenan, RK ;

Steytler, D ;

Grillo, I .

LANGMUIR, 2000, 16 (23) :8741-8748