Rhodamine-functionalised rhodium(III) complexes: dual role as bioimaging agents and controllable reactive oxygen species photosensitisers for photocytotoxicity applications

Compared to well-developed iridium(III) complexes, cyclometallated rhodium(III) complexes are underexplored as bioimaging reagents and photosensitisers, primarily due to the presence of non-emissive low-lying d–d excited states that limit their photophysical...