Issue 22, 2023

Through-space charge transfer delayed fluorescence in tris(triazolo)triazine donor–acceptor copolymers

Abstract

Donor–acceptor materials containing tris(triazolo)triazine (TTT) acceptors have recently gained attention as green to deep-blue fluorophores exhibiting thermally activated delayed fluorescence (TADF). Concurrently, polymers exhibiting through-space charge transfer (TSCT) between donor and acceptor monomers have been reported as high-performance TADF materials, yet few TSCT polymers have been reported to date. Here we describe the synthesis of copolymers comprised of TTT acceptor and 9,9-dimethyl-9,10-dihydroacridine donor monomers by ring-opening polymerization. These non-conjugated polymers have molecular weights up to 68.0 kDa and exhibit blue-green TSCT TADF in solution and the solid state. The photophysical properties of these materials are described herein, and density functional theory with noncovalent interaction analysis is used to explain the TSCT behaviour of the donor–acceptor pairs.

Graphical abstract: Through-space charge transfer delayed fluorescence in tris(triazolo)triazine donor–acceptor copolymers

Supplementary files

Article information

Article type
Paper
Submitted
25 mar 2023
Accepted
05 mai 2023
First published
18 mai 2023

Polym. Chem., 2023,14, 2742-2749

Through-space charge transfer delayed fluorescence in tris(triazolo)triazine donor–acceptor copolymers

R. Hojo, B. T. Luppi, K. Bergmann and Z. M. Hudson, Polym. Chem., 2023, 14, 2742 DOI: 10.1039/D3PY00325F

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