Time-resolved study of the photooxygenation of 3-hydroxyflavone

doi:10.1021/JA00201A071

Paper

Time-resolved study of the photooxygenation of 3-hydroxyflavone

Published Sep 13, 1989 · Shannon L. Studer, W. Brewer, Marty L. Martinez

Journal of the American Chemical Society

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54

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1

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Abstract

3-hydroxyflavones are prototype molecules for studying the dynamics of the proton-transfer reaction in the excited state as well as in the ground state. Their lasing action has been reported with a high efficiency of laser gain. Unfortunately, a major obstruction to the practical application of 3-hydroxy-flavones as laser dyes is due to a photochemical reaction possibly involving molecular oxygen. In this communication we report a direct time-resolved study of the photooxygenation of 3-hydroxyflavone (3HF) in the normal state as well as in the tau-tomer state. Our results not only provide a detailed mechanism of the photooxygenation reaction but also give indirect evidence to support the role of the triplet state in the reverse proton-transfer reaction.

Study Snapshot

This study provides a detailed mechanism for photooxygenation of 3-hydroxyflavone, supporting the role of the triplet state in the reverse proton-transfer reaction.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Time-resolved study of the photooxygenation of 3-hydroxyflavone

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References

Citations

Carbon Monoxide-Releasing Activity of Plant Flavonoids

Quercetin and 2,3-dehydrosilybin, found in fruits and vegetables, can act as photoactivatable carbon monoxide-releasing molecules, potentially offering chemopreventive and therapeutic benefits in human pathology and plant biology.

Structure–Photoreactivity Relationship Study of Substituted 3-Hydroxyflavones and 3-Hydroxyflavothiones for Improving Carbon Monoxide Photorelease

Substituted 3-hydroxyflavone and 3-hydroxyflavothione derivatives show enhanced carbon monoxide photorelease, offering a promising alternative to traditional CO administration for therapeutic purposes.

Multimodal Carbon Monoxide Photorelease from Flavonoids

Photooxygenation of flavonoids can produce carbon monoxide through two orthogonal pathways, depending on their hydroxy group substitution pattern and reaction conditions.

Visible-Light-Activated Carbon Monoxide Release from Porphyrin–Flavonol Hybrids

Porphyrin-flavonol hybrids are highly efficient photoactivatable carbon monoxide-releasing molecules with potential for future biological and medical applications.

Type-I Photosensitizer-Triggered Controllable Carbon Monoxide Release for Effective Treatment of Staph Skin Infection.

The developed photoresponsive carbon monoxide-releasing nanocomposite effectively inhibits staph skin infections and bacterial biofilm, potentially overcoming antibiotic resistance.