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 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.


Product Code M2417A1-LT-100mg
Price $313 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


Green Dopant Material with Boron-based Carbazoles

High purity sublimed thermally activated delayed fluorescent (TADF) emitter for highly efficient OLEDs


CzDBA, namely 5,10-bis(4-(9H-carbazol-9-yl)-2,6-dimethylphenyl)-5,10-dihydroboranthrene, is a diboron compound with a D-A-D structure of two electron-donating carbazoles on both ends and an electron-accepting dihydroboranthrene in the middle, bridged by two 2,6-dimethylphenyls between the donor and acceptor units.

High purity 2171334-43-1 sublimed material

High purity sublimed material

>99.5%

Worldwide shipping

Worldwide shipping

Quick and reliable shipping

Enhances OLED stability

Enhances OLED stability

Balanced electron and hole transport with a broad recombination zone

Excellence photoluminescence quantum yield

Excellence photoluminescence quantum yield

C.a. 100% and an 84% horizontal dipole ratio in the thin film

With near-trap-free and remarkably balanced bipolar electron and hole transport characteristics, CzDBA is a thermally activated delayed fluorescence (TADF) emitter, converting triplet excitons into singlet excitons via reverse intersystem crossing (RIC). This D-A-D type structure generates TADF with a photoluminescence quantum yield of ~100% and an 84% horizontal dipole ratio in the thin film. A green OLED based on CzDBA exhibits a high external quantum efficiency of 37.8 ± 0.6%, a current efficiency of 139.6 ± 2.8 cd A−1 and a power efficiency of 121.6 ± 3.1 lm W−1 with an efficiency roll-off of only 0.3% at 1,000 cd m−2. Furthermore, the balanced electron and hole transport results in a broad recombination zone, leading to greatly enhanced device stability.

General Information

CAS number 2171334-43-1
Chemical formula C52H50B2N2
Molecular weight 714.51 g/mol
Absorption* λmax 342 nm (in toluene)
Fluorescence λem 524 nm (in film)
HOMO/LUMO HOMO = 5.93 eV, LUMO = 3.45 eV
Synonyms 5,10-Bis(4-(9H-carbazol-9-yl)-2,6-dimethylphenyl)-5,10-dihydroboranthrene
Classification / Family Carbazole derivatives, Green dopant, TADF materials, Sublimed materials.


Product Details

Purity Sublimed* >99% (HPLC)
Melting point TGA: n.a.
Appearance White crystals/powder

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

czdba - 2171334-43-1 - 5,10-Bis(4-(9H-carbazol-9-yl)-2,6-dimethylphenyl)-5,10-dihydroboranthrene chemical structure
5,10-Bis(4-(9H-carbazol-9-yl)-2,6-dimethylphenyl)-5,10-dihydroboranthrene (CzDBA) chemical structure, 2171334-43-1

Pricing

Grade Product Code Quantity Price
Sublimed (>99.5% purity) M2417A1 100 mg £250
Sublimed (>99.5% purity) M2417A1 250 mg £500
Sublimed (>99.5% purity) M2417A1 500 mg £800
Sublimed (>99.5% purity) M2417A1 1 g £1150

MSDS Documentation

czdba - 2171334-43-1 - 5,10-Bis(4-(9H-carbazol-9-yl)-2,6-dimethylphenyl)-5,10-dihydroboranthreneCzDBA MSDS Sheet

Literature and Reviews

  1. Diboron compound-based organic light-emitting diodes with high efficiency and reduced efficiency roll-off, T. Wu et al., Nature Photon 12, 235–240 (2018); DOI: 10.1038/s41566-018-0112-9
  2. Substituent engineering of the diboron molecular architecture for a nondoped and ultrathin emitting layer, T. Wu et al., Chem. Sci., 13, 12996 (2022); DOI: 10.1039/d2sc04725j.
  3. Molecular Origin of Balanced Bipolar Transport in Neat Layers of the Emitter CzDBA, W. Liu et al., Adv. Mater. Technol., 6 (2), 2000120 (2021); DOI: 10.1002/admt.202000120.
  4. Enhanced Operational Stability by Cavity Control of Single-Layer Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence, Y. Li et al., Adv. Mater., 2304728 (2023); DOI: 10.1002/adma.202304728.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

Return to the top