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ossila材料PPO27

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产品名称: ossila材料PPO27
产品型号: 1299463-56-1
产品展商: Ossila
产品文档:
 MSDS ppo27

简单介绍


ossila材料PPO27  的详细介绍

PPO27 is a host material developed for highly efficient thermally activated delayed fluorescence (TADF) devices. It has a bipolar structure of electron rich phenylcarbazole core with two electron deficient diphenylphosphine oxide units.

A maximum external quantum efficiency (EQE) of 24.2% was achieved by using PPO27 as the bipolar host and 4CzIPN as the green dopant. This was possible because due to the effective energy transfer from the host to the dopant. The TADF emitter 4CzIPN interacted strongly with the PPO27 host as the latter has strong polarity, and a significant redshift in the electroluminescence spectrum was observed at higher doping concentrations.PPO27 is a typical alcohol soluble bipolar host material which is soluble in isopropyl alcohol (IPA) and possesses a high triplet energy of 2.81 eV for application as a host for sky blue (FIrpic) and deep blue (FCNIrpic) phosphorescent triplet emitters. Smooth surface morphologies with low surface roughness less than 0.30 nm were observed in the PPO27:FIrpic and PPO27:FCNIrpic films spin coated from their IPA solutions.

General Information


CAS number 1299463-56-1
Chemical formula C42H31NO2P2
Molecular weight 643.65 g/mol
Absorption λmax 257, 309 nm (in DCM)
Fluorescence λem 386 nm (in DCM)
HOMO/LUMO HOMO = 6.25 eV, LUMO = 3.0 eV (ET = 2.81 eV) [1]
Full name 2,7-Bis(diphenylphosphoryl)-9-phenyl-9H-carbazole
Synonyms PPO27
Classification / Family Carbazole derivatives, bipolar materials, TADF host materials, phosphorescent host materials, sublimed materials, TADF materials, OLEDs, organic electronics

Product Details


Purity Sublimed* >99.0%
Melting point TGA > 350 °C (0.5% weight loss)
Color White Powder
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