FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.

Product Code M2356A1-250mg
Price £360 ex. VAT

Low price, high purity DPPyA

Electron transport layer material with high electron mobility

DPPyA (CAS number 1257879-34-7), or 9,10-bis(6-phenylpyridin-3-yl)anthracene, consists of an anthracene core joined by two phenylpyridine units. With two adjacent pyridine units, it is electron deficient. As a result, DPPyA is normally used as an electron transport layer material, either by itself, or together with Liq as dual electron transport layer materials in organic light-emitting diodes.

The pyridine units of DPPyA not only facilitate charge injection, but also enhance the electron-transporting mobility, benefitting from the closely packed molecules induced by the intermolecular H---N hydrogen bonding. DPPyA achieved high electron mobility of 1.5 × 10− 3 cm2/Vs under the electric field of 5.5 × 105 V/cm due to the existence of good molecular stacking.

Owing to its high electron mobility, lower operation voltages and high current densities can be observed in devices with DPPyA as electron transport layer material.

General Information

CAS number 1257879-34-7
Chemical formula C36H24N2
Molecular weight 484.59 g/mol
Absorption λmax 379, 401 nm
Fluorescence λem 439 nm
HOMO/LUMO HOMO = 5.9 eV, LUMO = 3.0 eV [1]
Full name 9,10-bis(6-phenylpyridin-3-yl)anthracene
Synonyms DPPyA
Classification / Family Anthracene derivatives, electron transport layer materials, sublimed materials, TADF materials, OLEDs, organic electronics

Product Details

Purity Sublimed* >99.0%
Melting point Tg = 135 °C,
Colour White 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.

Chemical Structure

DPPyA chemical structure
Chemical structure of 9,10-bis(6-phenylpyridin-3-yl)anthracene (DPPyA), CAS 1257879-34-7

Device Structure(s)

Device structure (ITO)/HATCN (5 nm)/NPB (30 nm)/BCzPh (10 nm)/α,β-ADN:x wt% pSFIAc2 (30 nm)/CzPhPy (20 nm)/DPPyA (20 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour blue light emitting device Blue
Max. EQE 9.1%
Max. Power Efficiency 5.2 lm W−1
Device structure (ITO)/HATCN (4.2 nm)/NPB (30 nm)/TCTA (10 nm)/mCP (10 nm)/mCBP:20 wt% TCTPCF3:1 wt% TCz-BN1 (30 nm)/CzPhPy (10 nm)/DPPyA (30 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour green light emitting device Green
Max. EQE 11.5%
Max. Current Efficiency 31.1 cd/A
Max. Power Efficiency 22.2 lm W−1

Device structure (ITO)/HATCN (4.2 nm)/NPB (30 nm)/TCTA (10 nm)/mCP (10 nm)/mCBP:20 wt% DACT-II:5 wt% TCz-BN2 (30 nm)/CzPhPy (10 nm)/DPPyA (30 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour yellow light emitting device Yellow
Max. EQE 25.1%
Max. Current Efficiency 81.1 cd/A
Max. Power Efficiency 79.7 lm W−1


Grade Order Code Quantity Price
Sublimed (>99%) M2356A1 250 mg £360
Sublimed (>99%) M2356A1 500 mg £580
Sublimed (>99%) M2356A1 1 g £950

MSDS Documentation


Literature and Reviews

  1. Ultrahigh-Efficiency Green PHOLEDs with a Voltage under 3 V and a Power Efficiency of Nearly 110 lm W−1 at Luminance of 10 000 cd m−2, D. Zhang et al., Adv. Mater., 29 (40); 1702847 (2017); 10.1002/adma.201702847.
  2. Highly efficient and stable deep-blue OLEDs based on narrowband emitters featuring an orthogonal spiro-configured indolo[3,2,1-de]acridine structure, Chem. Sci., 2022; DOI: 10.1039/D2SC01543A.
  3. Multi-resonant thermally activated delayed fluorescence emitters based on tetracoordinate boron-containing PAHs: colour tuning based on the nature of chelates, G. Meng et al., Chem. Sci., 13, 1665 (2022); DOI: 10.1039/d1sc05692a.
Return to the top