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.

3,3',6,6'-Tetrabromo-9,9'-bicarbazole

CAS Number 18628-03-0

Chemistry Building Blocks, Dibromo Monomers, Heterocyclic Building Blocks, Materials


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

Covalent Organic Framework (COF) Bicarbazole Ligand

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


Specifications | MSDS | Literature and Reviews


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

Worldwide Shipping

Quick and reliable shipping

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.
Return to the top