LUMINESCENT GOLD (III) COMPOUNDS WITH THERMALLY ACTIVATED DELAYED FLUORESCENCE (TADF) AND THERMALLY STIMULATED DELAYED PHOSPHORESCENCE (TSDP) PROPERTIES FOR ORGANIC LIGHT-EMITTING DEVICES AND THEIR PREPARATION
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United States of America Patent
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Jul 4, 2024
app pub date -
Mar 25, 2022
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May 10, 2021
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Abstract
Described herein is a novel concept of the realization of thermally activated delayed fluorescence (TADF) and thermally stimulated delayed phosphorescence (TSDP) to harvest light emission from the higher-energy singlet and triplet excited states via the up-conversion from the lowest-energy triplet excited state by efficient reverse internal conversion together with reverse intersystem crossing as well as the development of emitters with TADF and TSDP properties, as exemplified by a new class of gold (III) compounds with TADF and TSDP properties. The gold (III) compounds include N-heterocycle-containing cyclometalating tridentate ligand and one auxiliary ligand, both coordinated to a gold (III) metal centre and having the chemical structure shown in generic formula (I).
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