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ossila材料4DBFHPB

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产品名称: ossila材料4DBFHPB
产品型号: 2280942-02-9
产品展商: Ossila
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简单介绍


ossila材料4DBFHPB  的详细介绍

4DBFHPB is a hole transport layer material based on a hexaphenylbenzene (HPB) core with two electron-donating dibenzofuranylphenylamine peripheral groups. Dibenzofuran-terminated hole-transporters are well-known for highly efficient and long lifetime thermally activated delayed fluorescent (TADF) and phosphorescent organic light-emitting devices (OLEDs).

4DBFHPB exhibits high glass temperature (Tg) of 135 °C with superior thermal and electrical stability, and substantially improved anionic bond dissociation energy (BDE) when compared with its phenyl-containing counterpart, realizing high device stability in blue and green emitting OLEDs. Green TADF-OLED based on 4DBFHPB as HTL and 4CzIPN as the green emitter exhibited approximately 19.2% EQE and LT50 of over 24,000 h, and a low driving voltage of 4.07 eV at 1000 cd cm-2.

The material also demonstrates high triplet energy level ET of 2.7 eV, and hole transport rate of 1.5 × 10−3 cm2 V−1 s−1, 300 times greater than that of its phenyl counterpart TATT which contains two diphenylamine end groups.

  • High triplet energy level
  • High hole mobility
  • Great blue and green TADF device stability with long LT50

General Information


CAS Number 2280942-02-9
Chemical Formula C78H52N2O2
Molecular Weight 1049.26 g/mol
Absorption λmax 325 nm (in Film)
Photoluminescence λem 399 nm (in Film)
HOMO/LUMO HOMO = - 5.80 eV, LUMO = - 2.60 eV (ET = 2.7 eV)
Synonyms N4,N4''-Bis(4-dibenzofuranyl)-N4,N4'',2',3',5',6'-hexaphenyl-[1,1':4',1''-terphenyl]-4,4''-diamine
Classification or Family Triarylamine derivative, Sublimed materials, Hole transport layer (HTL), OLEDs

Product Details


Purity Sublimed ≥99%, unsublimed ≥98%
Melting Point Tg = 135 °C, Tm = 313 °C, Td = 490 °C (5% weight loss)
Appearance Pale brown to beige powder/crystals
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