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Updated: Jul 9, 2025

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
Tailoring thermally activated delayed fluorescence emitters for efficient electrochemiluminescence with
Luca Morgan1, Giulio Pavan1, Nicola Demitri2
1Dipartimento di Scienze Chimiche, Università degli Studi di Padova via Marzolo 1 35131 Padova Italy alessandro.aliprandi@unipd.it.
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.
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