Issue 34, 2022

Organic radicals with inversion of SOMO and HOMO energies and potential applications in optoelectronics

Abstract

Organic radicals possessing an electronic configuration in which the energy of the singly occupied molecular orbital (SOMO) is below the highest doubly occupied molecular orbital (HOMO) level have recently attracted significant interest, both theoretically and experimentally. The peculiar orbital energetics of these SOMO–HOMO inversion (SHI) organic radicals set their electronic properties apart from the more common situation where the SOMO is the highest occupied orbital of the system. This review gives a general perspective on SHI, with key fundamental aspects regarding the electronic and structural factors that govern this particular electronic configuration in organic radicals. Selected examples of reported compounds with SHI are highlighted to establish molecular guidelines for designing this type of radical, and to showcase the potential of SHI radicals in organic spintronics as well as for the development of more stable luminescent radicals for OLED applications.

Graphical abstract: Organic radicals with inversion of SOMO and HOMO energies and potential applications in optoelectronics

Article information

Article type
Review Article
Submitted
03 Maijs 2022
Accepted
06 Jūl. 2022
First published
08 Jūl. 2022
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2022,13, 9833-9847

Organic radicals with inversion of SOMO and HOMO energies and potential applications in optoelectronics

S. Kasemthaveechok, L. Abella, J. Crassous, J. Autschbach and L. Favereau, Chem. Sci., 2022, 13, 9833 DOI: 10.1039/D2SC02480B

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