Jump to main content
Jump to site search

Issue 2, 2021
Previous Article Next Article

Flowers of the plant genus Hypericum as versatile photoredox catalysts

Author affiliations

Abstract

Photoredox catalysis is a powerful and modern strategy for the synthesis of complex organic molecules. So far, this field has relied on the use of a limited range of metal-based chromophores or artificial organic dyes. Here, we show that the ubiquitous plant genus Hypericum can be used as an efficient photoredox catalyst. The dried flowers efficiently catalyze two typical photoredox reactions, a photoreduction and a photooxidation reaction, with a versatile substrate scope. Constitution analysis of the worldwide available plant genus indicated that naphthodianthrones, namely the compounds of the hypericin family, are crucial for the photocatalytic activity of the dried plant material. In situ UV-vis spectroelectrochemical methods provide insights into the mechanism of the photoreduction reaction where the radical dianion of hypericin (Hyp˙2−) is the catalytically active species. Our strategy provides a sustainable, efficient and an easy to handle alternative for a variety of visible light induced photocatalytic reactions.

Graphical abstract: Flowers of the plant genus Hypericum as versatile photoredox catalysts

Back to tab navigation

Supplementary files

Article information


Submitted
28 Sep 2020
Accepted
23 Nov 2020
First published
24 Nov 2020

This article is Open Access

Green Chem., 2021,23, 881-888
Article type
Paper

Flowers of the plant genus Hypericum as versatile photoredox catalysts

J. Wang, K. Schwedtmann, K. Liu, S. Schulz, J. Haberstroh, G. Schaper, A. Wenke, J. Naumann, T. Wenke, S. Wanke and J. J. Weigand, Green Chem., 2021, 23, 881
DOI: 10.1039/D0GC03281F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements