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ossila材料DiKTa

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产品名称: ossila材料DiKTa
产品型号: 32081-22-4
产品展商: Ossila
产品文档:
 MSDS dikta

简单介绍


ossila材料DiKTa  的详细介绍

DiKTa is known to be the smallest TADF emitter with two carbonyl groups bridging the phenyl rings of a triphenylamine core. The carbonyl bridged triphenyamine is known as quinolino[3,2,1-de]acridine-5,9-dione (QAO). DiKTa is a multiple resonances thermally activated delayed fluorescence (MR-TADF) blue emitter, realized by the opposite resonance effect of the carbonyl and the nitrogen atoms that are close to each other.

DiKTa has high photoluminescence quantum efficiency of 72% and narrow blue emission (λPL = 468 nm). The QAO-based pure blue organic light-emitting diode achieves a maximum external quantum efficiency (EQEmax) of 19.4% with a small full width at half maximum of 39 nm.

DiKTa and its derivative Mes3DiKTa give comparable or even better product yield than 4CzIPN in a range of photocatalytic processes involving energy transfer, reductive and oxidative quenching, and dual photocatalytic processes.

MR-TADF red emitter 3DPA-DiKTa and green emitter 3TPA-DiKTa are also available in sublimed grade.

General Information


CAS Number 32081-22-4
Chemical Formula C20H11NO2
Molecular Weight 297.31 g/mol
Absorption* λmax n.a.
Fluorescence λem 453 nm (in toluene)
HOMO/LUMO HOMO = - 5.94 eV, LUMO = - 2.31 eV; ΔEST = 0.2 eV [1]
Synonyms Quinolino[3,2,1-de]acridine-5,9-dione, QAO, QAD
Classification or Family Quinolino[3,2,1-de]acridine-5,9-dione, Blue dopant, Multiresonance thermally activated delayed fluorescent (MR-TADF), Sublimed materials.

Product Details


Purity Unsublimed >98% (HPLC)
Melting Point mp = 257 - 260 °C
Appearance Yellow powder/crystals
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