Reaction kinetics of hydrated electrons in a quaternary micro emulsion system: A pulse radiolysis study

✍ Scribed by S. Adhikari; Ravi Joshi; C. Gopinathan

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 145 KB
• Volume: 30
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/(sici)1097-4601(1998)30:10<699::aid-kin1>3.0.co;2-q

✦ Synopsis

The pulse-radiolysis technique has been employed to produce and study the kinetics of hydrated electrons in a quaternary micro emulsion (Sodium Lauryl Sulfate Ϫ (e ) aq (NaLS)/water/cyclohexane/1-pentanol) system. Two orders of magnitude higher life time of the has been obtained as compared to that in reverse micelles reported earlier.

Ϫ

(20 s) e aq Several probes including a biomolecule have been used to determine the water pool concentrations and quenching constants

The observed yield and half life of the hydrated (k ).

(t ) q 1/2 electrons vary smoothly as the water droplet sizes are changed. The bimolecular rate constants for the reaction of with different solutes have been determined. It has been observed that Ϫ e aq the measured bimolecular rate constants for the reaction of hydrated electrons with different solutes are indicative of the solubilization sites, the water core sizes, and the surrounding environment.