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Product Code B4661-250mg
Price $125 ex. VAT

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Covalent Organic Framework (COF) Bicarbazole Ligand

A precursor for COFs in acetylene capture and separation, flame retardancy, energy storage, and hydrogen chloride sensors


3,3',6,6'-Tetrabromo-9,9'-bicarbazole (TBBCz), CAS number 18628-03-0, is a bicarbazole that is joined at 9,9'-positions (N-N bonding) with four bromo function groups at 3,3',6,6'-positions. It can be considered as two 3,6-dibromocarbazole joined together to form a butterfly shaped structure with a nitrogen-nitrogen bonding.

MOF and COF ligands

MOF and COF Ligands

Precursor for cross-linked COF networks

Worldwide shipping for 910231-21-9

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High purity 910231-21-9

High Purity

>98% high purity material

Facile reactions

Facile Reactions

Ideal for boronic esterification and Suzuki reactions

Highly stable MOF [Zn6L4(Me2NH2+)4‧3H2O], also known as FJU-83 with T-shaped functional capture sites, has been explored for acetylene capture and separation. FJU-83a demonstrated an excellent C2H2 uptake capacity of 122.9 cm3/g, plus good C2H2/CH4 and C2H2/CO2 selectivity of 24 and 2.9 respectively, under moderate temperature and normal atmosphere. Studies showed that the high selectivity over C2H2 to separate it from CH4 or CO2 was originated from the multiple C-H∙∙∙π and π∙∙∙π interactions. Car-CFT-5-500, another microporous bicarbazole-based COF, showed high specific surface area of 1,400 m2/g, a CO2 uptake capacity of 7.60 mmol/g at 273 K, and a capacitance of 545 F/g at 5 mV/s.

General Information

CAS Number 18628-03-0
Chemical Formula C24H12Br4N2
Full Name 3,3',6,6'-Tetrabromo-9,9'-bicarbazole
Molecular Weight 647.98 g/mol
Synonyms TBBCz, BC-4Br, 3,6-Dibromo-9-(3,6-dibromocarbazol-9-yl)carbazole
Classification or Family Bicarbazole, Heterocyclic building blocks, COF ligands

Chemical Structure

18628-03-0- 3,3',6,6'-Tetrabromo-9,9'-bicarbazole - tbbcz chemical structure
3,3',6,6'-Tetrabromo-9,9'-bicarbazole (TBBCz) Chemical Structure, 18628-03-0

Product Details

Purity > 98%
Melting Point -
Appearance White to off-white powder/crystals

MSDS Documentation

18628-03-0 - 3,3',6,6'-Tetrabromo-9,9'-bicarbazole - tbbcz3,3',6,6'-Tetrabromo-9,9'-bicarbazole MSDS Sheet

Literature and Reviews

  1. In Situ-Generated Heat-Resistant Hydrogen-Bonded Organic Framework for Remarkably Improving Both Flame Retardancy and Mechanical Properties of Epoxy Composites, Y. Zou et al., ACS Appl. Mater. Interfaces, 15 (40), 47463–47474 (2023); DOI: 10.1021/acsami.3c09197.
  2. Bicarbazole-based redox-active covalent organic frameworks for ultrahigh-performance energy storage, Chem. Commun., 53, 11334-11337 (2015); DOI: 10.1039/C7CC07024A.
  3. Ultrastable carbazole-tethered conjugated microporous polymers for high-performance energy storage, M. Ahmed et al., Microporous Mesoporous Mater., 333, 111766 (2022); DOI: 10.1016/j.micromeso.2022.111766.
  4. A highly fluorescent covalent organic framework as a hydrogen chloride sensor: roles of Schiff base bonding and π-stacking, A. EL-Mahdy et al., J. Mater. Chem. C, 8, 9520-9528 (2020); DOI: 10.1039/D0TC01872D.
  5. T-type capture site within highly stable bicarbazole-based metal–organic framework for C2H2 purification from CO2 and CH4, X. Xu et al., Sep. Purif. Technol., 325, 124654 (2023); DOI: 10.1016/j.seppur.2023.124654.
  6. Porous organic/inorganic polymers based on double-decker silsesquioxane for high-performance energy storage, M. Mohamed et al., J. Polym. Res., 28, 219 (2021); DOI: 10.1007/s10965-021-02579-x.
  7. Heteroporous bifluorenylidene-based covalent organic frameworks displaying exceptional dye adsorption behavior and high energy storage, A. EL-Mahdy et al., J. Mater. Chem. A, 8, 25148-25155 (2020); DOI: 10.1039/D0TA07281H.
  8. Directly Synthesized Microporous Bicarbazole-Based Covalent Triazine Frameworks for High-Performance Energy Storage and Carbon Dioxide Uptake, M. Mohamed et al., ChemPlusChem, 84 (11), 1767-1774 (2019) DOI: 10.1002/cplu.201900635.

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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