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July 31, 2026OxygenOpen Access

Reactivity of Tertiary Amines with Singlet Oxygen and as Electron Donors in Riboflavin-Mediated Quinone Photoreduction

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Authors

ATAntonios TsompanidisHMHannah McMinnAMAndrew Mooney

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Overview

Randomized trial evaluates the reactivity of tertiary amines as electron donors in singlet oxygen-mediated photoreduction, highlighting implications for biochemical applications.

Key Points

  • The study investigates how tertiary amines react with singlet oxygen and their efficiency as electron donors in riboflavin-mediated reactions.
  • Utilized blue light to excite riboflavin or riboflavin phosphate as photosensitizers.
  • Analyzed reactions of singlet oxygen with various tertiary amines in aqueous solutions.
  • Measured hydrogen peroxide production and assessed electron donor efficiency in photoreduction assays.
  • Bicine and triethanolamine produced higher hydrogen peroxide (H2O2) yields at increased pH, while ethylenediamine tetraacetic acid did not.
  • Riboflavin was most effective with ethylenediamine tetraacetic acid, while riboflavin phosphate favored bicine and triethanolamine as electron donors.
  • Different amine buffers generated H2O2 but were ineffective as electron donors in quinone photoreduction.

Cite This Study

Tsompanidis et al. (2026) studied this question.

synapsesocial.com/papers/6a6c5510747664a1aa73d569https://doi.org/10.3390/oxygen6030021
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