Reactive dynamics in confined water droplets: Auramine O in AOT/water/heptane microemulsions

N T Hunt, A A Jaye, S R Meech

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The excited state reaction of a diphenyl methane dye, auramine O (AO), has been studied in water/AOT/heptane reverse micelles. When compared with bulk aqueous solution the reaction rate is strongly suppressed in the dispersed phase, and the kinetics are non-single exponential. The reaction rate is a strong function of micelle radius, increasing with increasing size. The results are discussed in terms of increased friction along the reactive coordinate due to confinement of the water phase and equilibrium between AO bound at the water/surfactant interface and in the dispersed water phase. (c) 2005 Elsevier B.V. All rights reserved.

LanguageEnglish
Pages89-93
Number of pages5
JournalChemical Physics Letters
Volume416
Issue number1-3
DOIs
Publication statusPublished - 29 Nov 2005

Fingerprint

Benzophenoneidum
Heptanes
Microemulsions
heptanes
Water
Micelles
water
Reaction rates
micelles
reaction kinetics
Methane
Excited states
Surface-Active Agents
Coloring Agents
friction
methane
dyes
surfactants
Friction
aqueous solutions

Keywords

  • aqueous reverse micelles
  • solvation dynamics
  • molecules
  • environment
  • relaxation
  • solvents

Cite this

Hunt, N T ; Jaye, A A ; Meech, S R . / Reactive dynamics in confined water droplets: Auramine O in AOT/water/heptane microemulsions. In: Chemical Physics Letters. 2005 ; Vol. 416, No. 1-3. pp. 89-93.
@article{aaf1f5db5d57485b9dc049e5b31dbe5b,
title = "Reactive dynamics in confined water droplets: Auramine O in AOT/water/heptane microemulsions",
abstract = "The excited state reaction of a diphenyl methane dye, auramine O (AO), has been studied in water/AOT/heptane reverse micelles. When compared with bulk aqueous solution the reaction rate is strongly suppressed in the dispersed phase, and the kinetics are non-single exponential. The reaction rate is a strong function of micelle radius, increasing with increasing size. The results are discussed in terms of increased friction along the reactive coordinate due to confinement of the water phase and equilibrium between AO bound at the water/surfactant interface and in the dispersed water phase. (c) 2005 Elsevier B.V. All rights reserved.",
keywords = "aqueous reverse micelles, solvation dynamics, molecules, environment, relaxation, solvents",
author = "Hunt, {N T} and Jaye, {A A} and Meech, {S R}",
year = "2005",
month = "11",
day = "29",
doi = "10.1016/j.cplett.2005.09.063",
language = "English",
volume = "416",
pages = "89--93",
journal = "Chemical Physics Letters",
issn = "0009-2614",
number = "1-3",

}

Reactive dynamics in confined water droplets: Auramine O in AOT/water/heptane microemulsions. / Hunt, N T ; Jaye, A A ; Meech, S R .

In: Chemical Physics Letters, Vol. 416, No. 1-3, 29.11.2005, p. 89-93.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Reactive dynamics in confined water droplets: Auramine O in AOT/water/heptane microemulsions

AU - Hunt, N T

AU - Jaye, A A

AU - Meech, S R

PY - 2005/11/29

Y1 - 2005/11/29

N2 - The excited state reaction of a diphenyl methane dye, auramine O (AO), has been studied in water/AOT/heptane reverse micelles. When compared with bulk aqueous solution the reaction rate is strongly suppressed in the dispersed phase, and the kinetics are non-single exponential. The reaction rate is a strong function of micelle radius, increasing with increasing size. The results are discussed in terms of increased friction along the reactive coordinate due to confinement of the water phase and equilibrium between AO bound at the water/surfactant interface and in the dispersed water phase. (c) 2005 Elsevier B.V. All rights reserved.

AB - The excited state reaction of a diphenyl methane dye, auramine O (AO), has been studied in water/AOT/heptane reverse micelles. When compared with bulk aqueous solution the reaction rate is strongly suppressed in the dispersed phase, and the kinetics are non-single exponential. The reaction rate is a strong function of micelle radius, increasing with increasing size. The results are discussed in terms of increased friction along the reactive coordinate due to confinement of the water phase and equilibrium between AO bound at the water/surfactant interface and in the dispersed water phase. (c) 2005 Elsevier B.V. All rights reserved.

KW - aqueous reverse micelles

KW - solvation dynamics

KW - molecules

KW - environment

KW - relaxation

KW - solvents

U2 - 10.1016/j.cplett.2005.09.063

DO - 10.1016/j.cplett.2005.09.063

M3 - Article

VL - 416

SP - 89

EP - 93

JO - Chemical Physics Letters

T2 - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 1-3

ER -