Order Code: M2091A1
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 Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2091A1 500 mg £177.00
Sublimed (>99.0% purity) M2091A1 1 g £283.00

General Information

CAS number 561064-11-7
Chemical formula C53H34N2
Molecular weight 698.85 g/mol
Absorption No data available
Fluorescence No data available
HOMO/LUMO HOMO = -6.0 eV, LUMO = -2.9 eV [1]
Synonyms 2-[4-(9,10-Di-naphthalen-2-yl-anthracen-2-yl)-phenyl]-1-phenyl-1H-benzoimidazole
Classification / Family Electron transport layer (ETL) materials, Solution-processed OLED materials, TADF materials, PHOLEDs, OPV, Sublimed materials


Product Details

Purity >99.0% (sublimed)
Melting Point No data available
Colour Light yellow powder

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


ZADN chemical structure, 561064-11-7
Chemical structure of 2-[4-(9,10-Di-naphthalen-2-yl-anthracen-2-yl)-phenyl]-1-phenyl-1H-benzoimidazole (ZADN), CAS No. 561064-11-7.



ZADN, 2-[4-(9,10-Di-naphthalen-2-yl-anthracen-2-yl)-phenyl]-1-phenyl-1H-benzoimidazole, is a family member of anthracene. It has been extensively explored and tested for applications in photochromic chemistry and OLED devices.

ZADN is widely used as an electron-transport layer material (ETL) and hole-blocking layer material (HBL) for organic electronic devices.

Device structure ITO (50  nm)/DNTPD (40 nm)/BPBPA (10 nm)/PCZAC (10 nm)/mCBP:DBFTrz:Ir(CNpi)3 (50:50:5) (30 nm)/DBFTrz (5  nm)/ZADN (20 nm)/LiF (1.5 nm)/Al (200 nm) [2]
Colour Blue blue
Max. Current Efficiency 34.8 cd/A
Max. Power Efficiency 23.2 lm W1
Max. EQE 18.0%
Device structure ITO (50 nm)/DNTPD (40 nm)/BPBPA (10 nm)/PCZAC (10  nm)/mCBP:DBFTrz:(Ir(ppy)2acac (50:50:5) (30 nm)/DBFTrz  (5 nm)/ZADN (20 nm)/LiF (1.5 nm)/Al (200 nm) [2]
Colour Green  green
Max. Current Efficiency 66.2 cd/A

Max. Power Efficiency

47.6 lm W1
Max. EQE 18.1%
Device structure ITO (50 nm)/DNTPD (40 nm)/BPBPA (10 nm)/PCZAC (10 nm)/mCBP:DBFTrz: Ir(mphmq)2tmd (50:50:5) (30  nm)/DBFTrz (5 nm)/ZADN (20 nm)/LiF (1.5 nm)/Al (200 nm) [2]
Colour Red  red
Max. Current Efficiency 30.6cd/A
Max. Power Efficiency 23.4 lm W1  
Max. EQE 21.2%

Literature and Reviews

  1. Triplet emitter doped exciton harvesting layer for improved efficiency and long lifetime in blue phosphorescent organic light-emitting diodes, J. Choi et al., Syn. Met., 220, 573-577 (2016);
  2. Electroplex as a New Concept of Universal Host for Improved Efficiency and Lifetime in Red, Yellow, Green, and Blue Phosphorescent Organic Light-Emitting Diodes, W. Song et al., Adv. Sci., 5, 1700608 (2018); DOI: 10.1002/advs.201700608
  3. Lifetime extension of blue phosphorescent organic light-emitting diodes by suppressing triplet-polaron annihilation using a triplet emitter doped hole transport layer, W. Song et al., Org. Electronics 49, 152-156 (2017);
  4. Pure Hydrocarbon Hosts for ≈100% Exciton Harvesting in Both Phosphorescent and Fluorescent Light‐Emitting Devices, L. Cui et al., Adv. Mater., 27, 4213–4217 (2015); DOI: 10.1002/adma.201501376.