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Product Code M2295A1-100mg
Price £230 ex. VAT

PPF, ETL material and host material for effective triplet excitons confinement

High-purity (>99.0%) and available online for priority dispatch

PPF, dibenzo[b,d]furan-2,8-diylbis(diphenylphosphine Oxide), contains an electron donating dibenzo[b,d]furan core and two electron deficient diphenylphosphine oxide units. Due to their electron deficient nature, both PPF and PPT can be used as electron transport layer materials, and in some cases, to form exciplex with electron deficient donors, i.e. TAPC as emitting layer materials in TADF-OLED devices.

PPF shows a high triplet energy (ET = 3.1 eV) and it also can be used as host material for effective triplet excitons confinement in the emissive layer. PPF could also be used as exciton blocking layer material.

General Information

CAS number 911397-27-8
Full name 2,8-Bis(diphenyl-phosphoryl)-dibenzo[b,d]furan
Chemical formula C36H26O3P2
Molecular weight 568.54 g/mol
Absorption λmax 300 nm in DCM
Fluorescence λem 440 nm in DCM
HOMO/LUMO HOMO = 6.7 eV, LUMO = 2.7 eV (ET = 3.1 eV) [1]
  • DFPO
  • Dibenzo[b,d]furan-2,8-diylbis(diphenylphosphine Oxide)
Classification / Family Dibenzofuran derivatives, Organic electronics, Electron-transport layer materials (ETL), Phosphorescent host materials, Fluorescent host materials, TADF-OLEDs, Organic long persistent luminescence, Sublimed materials.

Product Details

Purity Sublimed: >99.0% (HPLC)
Melting point 253 °C (dec.)
Appearance White powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.

Chemical Structure

PPF chemical structure
Chemical structure of 2,8-bis(diphenylphosphoryl)dibenzo[b,d]furan (PPF)

Device Structure(s)

Device structure ITO (50 nm)/HAT-CN (10 nm)/TAPC (50 nm)/CCP (10 nm)/PPF:TMCz-BO (20 nm)/PPF (10 nm)/B3PyPB (30 nm)/Liq (1 nm)/Al (100 nm) [1]
Colour blue light emitting device Blue
Max. EQE 20.7%
Device structure ITO (50 nm)/TAPC (70 nm)/CDBP (10 nm)/6 wt% CCX-II:PPF (20 nm)/PPF (10 nm)/BmPyPhB (30 nm)/Liq (1 nm)/Al (80 nm) [2]
Colour blue light emitting device Blue
Max. EQE 25.9%
Max. Current Efficiency 41.1 cd/A
Max. Power Efficiency 35.9 lm/W
Device structure ITO (50 nm)/HAT-CN (10 nm)/α-NPD (50 nm)/CCP (5 nm)/ 6 wt % DPAc-INN-1:PPF (20 nm)/PPF (10 nm)/TPBi (50 nm)/Liq (1 nm)/Al (100 nm) [3]
Colour blue light emitting device Blue
Max. EQE 12.8%
Max. Current Efficiency 24.2 cd/A
Max. Power Efficiency 18.1 lm/W
Device structure ITO/HAT-CN (10 nm)/a-NPD (40 nm)/CCP (5 nm)/18 wt% MFAc-PPM:PPF (20 nm)/PPF (10 nm)/TPBi (30 nm)/Liq (1 nm)/Al (100 nm) [4]
Colour blue light emitting device Blue
Max. EQE 20.4%
Max. Current Efficiency 41.7 cd/A
Max. Power Efficiency 37.2 lm/W

*For chemical structure information, please refer to the cited references.


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2295A1 100 mg £230
Sublimed (>99.0% purity) M2295A1 250 mg £460
Sublimed (>99.0% purity) M2295A1 500 mg £760
Sublimed (>99.0% purity) M2295A1 1 g £1250

MSDS Documentation


Literature and Reviews

  1. Nanosecond-time-scale delayed fluorescence molecule for deep-blue OLEDs with small efficiency rolloff, J. Kim et al., Nature Commun., 11, 1765 (2020); DOI: 10.1038/s41467-020-15558-5.
  2. Blue organic light-emitting diodes realizing external quantum efficiency over 25% using thermally activated delayed fluorescence emitters, T. Miwa et al., SCi. Report, 7, 284 (2017); DOI:10.1038/s41598-017-00368-5.
  3. An Isonicotinonitrile-based Blue Thermally Activated Delayed Fluorescence Emitter, I. Park et al., Chem. Lett., 49, 210–213 (2020); DOI:10.1246/cl.190808.
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