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POSTF
POSTF
  • 250mg
  • 500mg
  • 1g

$ 52.99

$ 40.76

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Product Details

POSTF, high quality and high purity bipolar host material

Phosphorescent host for highly efficient blue, green and red phosphorescence devices


POSTF, namely 2'-(Diphenylphosphoryl)-10-phenyl-10H-spiro[acridine-9,9'-fluorene], has an orthogonal molecular structure with an electron donating spiro[acridine-9,9'-fluorene] core and one electron withdrawing diphenylphosphine oxide attachment to the fluorene unit at 2-poistion.

Bipolar POSTF can be used as a single or together with as an exciplex phosphorescent host for highly efficient blue, green and red phosphorescence devices. Using POSTF as the host, large-size white light-emitting panel (15 cm × 15 cm) with max power efficiency of 75.9 lm W-1 can be achieved [1].

General Information


CAS number1647050-25-6
Full name2'-(Diphenylphosphoryl)-10-phenyl-10H-spiro[acridine-9,9'-fluorene]
Chemical formulaC43H30NOP
Molecular weight607.68 g/mol
Absorptionλmax 280 nm, 325 nm (in DCM)
Phosphoresceneλmax 430 nm (in DCM)
HOMO/LUMOHOMO = 5.57 eV, LUMO = 2.12 eV [1]
SynonymsDiphenyl(10-phenyl-10H-spiro[acridine-9,9'-fluoren]-2'-yl)phosphine oxide
Classification / FamilySpiro[acridine-9,9'-fluorene] derivatives, Light-emitting diodes, Bipolar host, TADF host materials, Sublimed materials.

Product Details


PuritySublimed >99.0% (HPLC)
Melting pointTg = 160 ℃, Td (Temperature at 5% weight loss) = 356 ℃.
AppearanceWhite powder/crystals

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

Chemical Structure


Chemical structure of 2'-(Diphenylphosphoryl)-10-phenyl-10H-spiro[acridine-9,9'-fluorene] (POSTF), CAS# 1647050-25-6.

Device Structure(s)


Device structureITO/HAT-CN (10 nm)/TAPC (45 nm)/POSTF: FIrpic (15 vol%, 20 nm)/TmPyPB (40 nm)/Liq (2 nm)/Al [1]
Colour Blue
Max. Power Efficiency50.5 lm W-1
Max. EQE26.8%
Device structureITO/HAT-CN/TAPC/POSTF/POSTF:POT2T:15 mol% FIrpic/POSTF:PO-T2T:Ir(MDQ)2(acac)/PO-T2T/Liq/Al [2]
Colour White
Max. Power Efficiency60.7 lm W-1
Max. EQE24.7%
Device structureITO/HAT-CN/TAPC/ POSTF/POSTF:PO-T2T: 15% FIrpic (CRS)/PO-T2T/Liq/Al [2]
Colour Blue
Max. Power Efficiency34.7 lm W-1
Max. EQE20.1%
Device structureITO/HAT-CN/TAPC/ POSTF/POSTF:PO-T2T: 15% FIrpic (CRS)/PO-T2T/Liq/Al [2]
Colour Blue
Max. Power Efficiency57.4 lm W-1
Max. EQE19.3%
Device structureITO/HAT-CN/TAPC/ POSTF/POSTF:PO-T2T: 15% Ir(MDQ)2(acac) (CRS)/PO-T2T/Liq/Al [2]
Colour Red
Max. Power Efficiency46.0 lm W-1
Max. EQE27.6%

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

Pricing


GradeOrder CodeQuantityPrice
Sublimed (>99.0% purity)M2337A1250 mg[[price gbp="380"]]
Sublimed (>99.0% purity)M2337A1500 mg[[price gbp="660"]]
Sublimed (>99.0% purity)M2337A11 g[[price gbp="1150"]]

MSDS Documentation


Literature and Reviews


  1. Orthogonal Molecular Structure for Better Host Material in Blue Phosphorescence and Larger OLED White Lighting, L. Ding et al., Adv. Funct. Mater., 25 (4); 645-650 (2015); DOI: 10.1002/adfm.201403402.
  2. High-Quality White Organic Light-Emitting Diodes Composed of Binary Emitters with Color Rendering Index Exceeding 80 by Utilizing Color Remedy Strategy, X. Tang et al., Adv. Funct. Mater., 29 (11); 1807541 (2019); DOI: 10.1002/adfm.201807541.
  3. Theoretical Investigations of the Spiro-Annulated Triphenylamine/ N-Phenylcarbazole-Based Ambipolar Host Materials for OLEDs, D. Zhang, et al., ChemistrySelect, 2 (22), 6604-6611 (2017); DOI: 10.1002/slct.201701424.
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