Singlet molecular oxygen quenching ability of carotenoids in a reversemicelle membrane mimetic system

From: Photochemistry and Photobiology | Date: April 1, 2002| Author: | Copyright information

Singlet Molecular Oxygen Quenching Ability of Carotenoids in a Reversemicelle Membrane Mimetic System(para)

ABSTRACT

The influence of the medium heterogeneity upon the bimolecular rate constants for the physical quenching, k^sub q^, and chemical quenching, k^sub r^, of singlet molecular oxygen O^sub 2^(^sup 1^Delta^sub g^) by seven natural and three synthetic carotenoids (CAR) with different substituent patterns was studied in a reverse micelle system of sodium bis(2-ethylhexyl)sulfosuccinate, hexane and water. Because O^sub 2^(^sup 1^Delta^sub g^,) was generated inside the water pools of ...

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