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Product Code B1181-25g
Price $182 ex. VAT

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A popular building block for the synthesis of dopant or host materials

Used in the application of highly efficient phosphorescent and TADF OLEDs.


3-Bromo-9H-carbazole is an isomer to 2-Bromo-9H-carbazole with the only difference being that 9H-carbazole is mono-brominated at 3-position. Blocked at 3-position, 3-Bromo-9H-carbazole derivatives reduce the chance of being oxidised to form excimers or oligomers.

Bipolar host material (PBCz-PO) with an electron donating bi-carbazole core joined at 3,3'-postions and an electron accepting phosphine oxide amide unit, possesses a relatively high triplet energy (2.76 eV) which makes it suitable to be blue host in phosphorescent organic light-emitting diodes. The device with PBCz-PO as a host and FIrpic as a dopant achieved a maximum current efficiency (ηc) of 31.5 cd/A, a maximum power efficiency (ηp) of 31.0 lm/W and a maximum external quantum efficiency (EQE) of 13.4% as well as low driving voltage [1]. Device based on 9'-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-9,9''-diphenyl-9H,9'H,9''H-3,3':6',3''-tercarbazole (TCzTrz) as the dopant and DPEPO as the host has also gained high device efficiencies with ηc f 39.4 cd/A, ηp of 61.5 lm/W and a maximum external quantum efficiency (EQE) of 31.8%. The device has the following configuration: ITO (50 nm)/PEDOT:PSS (60 nm)/TAPC (20 nm)/mCP (10 nm)/TCzTrz:DPEPO (10 w%) (25 nm)/TSPO1 (5 nm)/TBPi (20 nm)/LiF (1.5 nm)/Al (200 nm).

3-Bromo-9H-carbazole can be prepared by reacting 9H-carbzole with N-bromosuccinimide (NBS) In tetrahydrofuran at room temperature.

General Information

CAS Number 1592-95-6
Chemical Formula C12H8BrN
Full Name 3-Bromo-9H-carbazole
Molecular Weight 246.1 g/mol
Synonyms 3-Bromocarbazole
Classification / Family Carbazoles, semiconductor synthesis intermediates, Electron donor unit, OLED, OFETs, organic photovoltaics

Chemical Structure

3-Bromo-9H-carbazole chemical structure, 1592-95-6
3-Bromo-9H-carbazole chemical structure, CAS 1592-95-6

Product Details

Purity >98% (1H NMR)
Melting Point 198 °C
Appearance White to off-white powder/crystals

MSDS Documentation

3-Bromo-9H-carbazole3-Bromo-9H-carbazole MSDS Sheet

Literature and Reviews

  1. A host material consisting of phosphinic amide for efficient sky-blue phosphorescent organic light-emitting diodes, F, Wu et al., Synth. Met., 205, 11-17 (2015); DOI: 10.1016/j.synthmet.2015.03.023.
  2. Carbazole or carbazole-3-carbonitrile /pyridine host materials for efficient solution-processable blue phosphorescent and green TADF OLEDs, C. Tang et al., Opt. Mater., 132, 112573 (2022); DOI: 10.1016/j.optmat.2022.112573.
  3. Carbazole-Based Hole-Transport Materials for High-Efficiency and Stable Perovskite Solar Cells, L. Gao et al., ACS Appl. Energy Mater., 3, 5, 4492–4498 (2020); DOI: 10.1021/acsaem.0c00179.
  4. Engineering of Interconnect Position of Bicarbazole for High External Quantum Efficiency in Green and Blue Phosphorescent Organic Light-Emitting Diodes, M. Kim et al., ACS Appl. Mater. Interfaces, 6, 17, 14874–14880 (2014); 10.1021/am502848c.
  5. Synthesis and Characterization of Telmisartan-Derived Cell Death Modulators to Circumvent Imatinib Resistance in Chronic Myeloid Leukemia, A. Schoepf et al., ChemMedChem, 15, 1067– 1077 (2020); DOI: 10.1002/cmdc.202000092.
  6. Nearly 100% horizontal dipole orientation and up-conversion efficiency in blue thermally activated delayed fluorescent emitters, A. Byeon et al., Adv. Opt. Mater., 6 (15), 1701340 (2018); DOI: 10.1002/adom.201701340.
  7. Cyanopyridine Based Bipolar Host Materials for Green Electrophosphorescence with Extremely Low Turn-On Voltages and High Power Efficiencies, W. Li et al., ACS Appl. Mater. Interfaces, 8, 33, 21497–21504 (2016); DOI: 10.1021/acsami.6b04395..

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.

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