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Product Code M2344A1-250mg
Price £320 ex. VAT

DMPPP, effective host material for blue fluorescent devices

Exhibits high luminance without compromising on the efficiency

DMPPP, or 1,1'-(2,5-Dimethyl-1,4-phenylene)dipyrene, has a structure of two pyrene units linked via a dimethylphenyl linker. DMPPP is known as a triplet-triplet annihilation (TTA) energy up-conversion material to effectively regulate exciton utilization. 

Normally, DMPPP is used as an effective host material for fluorescent blue devices, exhibiting TTA-type delayed electroluminescence. Unlike TADF-based OLEDs, which generally have low maximum luminance and high roll-off efficiencies, DMPPP host devices provide high luminance without compromising on the efficiency.

DMPPP is also a good blue emitter with a high PLQY of 0.85, a singlet energy level of 3.1 eV and triplet energy level of 2.1 eV.

General Information

CAS number 1036404-84-8
Full name 1,1'-(2,5-Dimethyl-1,4-phenylene)dipyrene
Chemical formula C40H26
Molecular weight 506.63 g/mol
Absorption λmax 390 nm in Toluene
PL λem 397 nm in DCM
HOMO/LUMO HOMO = 5.26 eV, LUMO = 2.50 eV; S1=2.1 eV, T1=2.1 eV[1]
Synonyms 1-(2,5-dimethyl-4-(1-pyrenyl)phenyl)pyrene
Classification / Family Pyrene derivatives, Blue emitter, Fluorescent host materials, Sublimed materials

Product Details

Purity Sublimed >99.0% (HPLC)
Melting point Tg = 137 °C
Appearance Pale yellow 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

Chemical structure of DMPPP, CAS# 1036404-84-8
Chemical structure of Chemical structure of 1,1'-(2,5-Dimethyl-1,4-phenylene)dipyrene (DMPPP), CAS 1036404-84-8.

Device Structure(s)

Device structure ITO/NPNPB: 10% MoO3 (5 nm)/NPNPB (80 nm)/NPB(10 nm)/DMPPP:5% TSTA* (25 nm)/BAlq2 (20 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour blue light emitting device Blue
Max Current Efficiency 12.3 cd/A 
Max. Power Efficiency 5.7 Im/W
Max. EQE 10.2%
Device structure ITO/NPB (60 nm)/NPB:DPASP (3 wt%, 10 nm)/DMPPP:DPASP* (5 wt%, 15 nm)/BAlq (20 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour blue light emitting device Blue
Max Current Efficiency 13.0 cd/A 
Max. Power Efficiency 8.9 Im/W
Max. EQE 10.7%

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


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2344A1 250 mg £320
Sublimed (>99.0% purity) M2344A1 500 mg £500
Sublimed (>99.0% purity) M2344A1 1 g £850

MSDS Documentation


Literature and Reviews

  1. Efficient delayed fluorescence from triplet-triplet annihilation for deep-blue electroluminescence, P. Chou et al., Chem. Commun., 50, 6869-6871 (2014); DOI: 10.1039/C4CC01851F.
  2. Superior upconversion fluorescence dopants for highly efficient deep-blue electroluminescent devices, Y. Chen et al., Chem. Sci., 7, 4044 (2016); DOI: 10.1039/c6sc00100a.
  3. The Photophysical Properties of Dipyrenylbenzenes and Their Application as Exceedingly Efficient Blue Emitters for Electroluminescent Devices, K. Wu et al., Adv. Funct. Mater., 18 (1), 67-75 (2008); DOI: 0.1002/adfm.200700803..
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