Tailoring thermally activated delayed fluorescence emitters for efficient electrochemiluminescence with tripropylamine as coreactant

Luca Morgan; Giulio Pavan; Nicola Demitri; Chiara Alberoni; Thomas Scattolin; Marco Roverso; Sara Bogialli; Alessandro Aliprandi

doi:10.1039/d3ra06863c

Tailoring thermally activated delayed fluorescence emitters for efficient electrochemiluminescence with tripropylamine as coreactant

RSC Adv. 2023 Nov 24;13(49):34520-34523. doi: 10.1039/d3ra06863c. eCollection 2023 Nov 22.

Authors

Luca Morgan¹, Giulio Pavan¹, Nicola Demitri², Chiara Alberoni¹, Thomas Scattolin¹, Marco Roverso¹, Sara Bogialli¹, Alessandro Aliprandi¹

Affiliations

¹ Dipartimento di Scienze Chimiche, Università degli Studi di Padova via Marzolo 1 35131 Padova Italy alessandro.aliprandi@unipd.it.
² Elettra-Sincrotrone Trieste S.C.p.A 34149 Basovizza Trieste Italy.

Abstract

Using a unified metal-free procedure, a selection of Thermally Activated Delayed Fluorescence (TADF) emitters has been synthesized and characterized. Different acceptor and donor moieties have been explored in order to develop red emitting dyes with reduction potentials suitable for the application in ECL using tri-propylamine as coreactant. The most promising compound shows terephthalonitrile as the acceptor and diphenylamines as donors, and it displayed an ECL efficiency that is double the one of the standard [Ru(bpy)₃](PF₆)₂. Based on such findings, a novel water-soluble TADF emitter (Na₄[4DPASO₃TPN]) has been synthesized and characterized to enable electrochemiluminescence in an aqueous medium.