What question did this study set out to answer?

This research aims to explore methods for synthesizing axially chiral three-dimensional nanographenes through metal-free C–H coupling.

February 12, 2026Chemical Science0 citationsOpen Access

Self-Induced Charge Transfer Activation Enables Metal-Free C–H Coupling of Polycyclic Aromatic Hydrocarbons under Photo Irradiation

KKKazuma Kurokawa AKAki Kohyama YKYusuke Kuroda

Key Points

This research aims to explore methods for synthesizing axially chiral three-dimensional nanographenes through metal-free C–H coupling.
Utilization of charge transfer activation for C–H coupling
Application of photo irradiation in the reaction process
Synthesis of polycyclic aromatic hydrocarbons using this method
Successful demonstration of metal-free C–H coupling
Enhanced synthesis of three-dimensional nanographenes under light exposure
Improved stability of π-extended arenes during the reaction process

Abstract

Axially chiral three-dimensional nanographenes (3D NGs) represent promising scaffolds for chiral optoelectronic materials, yet their direct synthesis remains challenging because of the oxidative fragility of π-extended arenes. Here we report...

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