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.
Join the Team About Ossila Contact Us |Log In Create Account| Worldwide, £ GBP   Flag

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

Px-VPN CAS 1784766-39-7
Product Code M2388A1-LT-100mg
Price £330 ex. VAT
£ GBP

How to Order | Worldwide Shipping

Px-VPN, TADF green dopant material

Available in sublimed grade for highly efficient TADF-OLED devices

Px-VPN (CAS number 1784766-39-7), namely 4,5-bis[4-(N-phenoxazine)phenyl]phthalonitrile, has a similar structure to 2CzPN with two electron-withdrawing nitrile groups at 1,2-positions and two electron-donating N-phenylphenoxazine groups 4,5-positions of the benzene ring. The phenyl groups separating the electron-donating phenoxazine and electron-withdrawing phthalonitrile are acting as π bridges to the structure of A-π-D. Phenoxazines are stronger electron donating than carbazoles, Px-VPN is a TADF green emitter (λmax PL = 540 nm) while Cz-VPN is blue (λmax PL = 450 nm).

With a smaller ΔEST, the delayed emission lifetime of the green-emitting Px-VPN film found to be much shorter than those of the blue-emitting Cz-VPN, suggesting a more efficient T1  to S1  up-conversion. TADF green light-emitting device based on Px-VPN as the dopant and mCP as the host achieved a high EQE of 14.9%.

General Information

CAS Number 1784766-39-7
Chemical Formula C44H26N4O2
Molecular Weight 624.7 g/mol
Absorption λmax 304 nm, 406 nm in toluene [1]
Fluorescence λmax 577 nm in toluene [1]
HOMO/LUMO HOMO = 5.70 eV, LUMO = 3.30 eV [1]
Full Name 4,4''-Di-10H-phenoxazin-10-yl[1,1':2',1''-terphenyl]-4',5'-dicarbonitrile
Synonyms 4,5-Bis[4-(N-phenoxazine)phenyl]phthalonitrile
Classification / Family Phenoxazine derivatives, TADF green dopant, TADF Host, Sublimed materials

Chemical Structure

px-vpn chemical structure, 1784766-39-7, 4,4''-Di-10H-phenoxazin-10-yl[1,1':2',1''-terphenyl]-4',5'-dicarbonitrile
Chemical Structure of 4,4''-Di-10H-phenoxazin-10-yl[1,1':2',1''-terphenyl]-4',5'-dicarbonitrile (Px-VPN), CAS 1784766-39-7

Product Details

Purity Sublimed* >99.0% (HPLC)
Melting Point N/A
Appearance Orange powder/crystals

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

Device Structure

Device Structure ITO (110 nm)/NPD (40 nm)/mCP (10 nm)/Px-VPN:mCP (6wt%, 20 nm)/PPF (10 nm)/TPBi (30 nm)/LiF (0.8 nm)/Al (100 nm) [1]
Colour green light emitting device  Green
Max. EQE 14.9%
Max. Current Efficiency 45.4 cd/A
Max. Power Efficiency 26.7 Im/W

MSDS Documentation

Px-VPN MSDSPx-VPN MSDS sheet

Pricing

Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2388A1 100 mg £330
Sublimed (>99.0% purity) M2388A1 250 mg £660
Sublimed (>99.0% purity) M2388A1 500 mg £1150
Sublimed (>99.0% purity) M2388A1 1 g £1900

Literature and Reviews

  1. Full-Color Delayed Fluorescence Materials Based on Wedge-Shaped Phthalonitriles and Dicyanopyrazines: Systematic Design, Tunable Photophysical Properties, and OLED Performance, I. Park et al., Adv. Funct. Mater., 26, 1813−1821 (2016); 10.1002/adfm.201505106.
  2. All-organic thermally activated delayed fluorescence materials for organic light-emitting diodes, Y. Liu et al., Nat Rev. Mater., 3, 18020 (2018); DOI: 10.1038/natrevmats.2018.20.
  3. Molecular Design Strategy of Organic Thermally Activated Delayed Fluorescence Emitters, Y. Im et al., Chem. Mater., 29 (5), 1946–1963 (2017); DOI: 10.1021/acs.chemmater.6b05324.
Return to the top