• 2,5-Dibromothieno[2,3-b]thiophene (CAS 25121-86-2) - TCI D4032 - AMI Scientific
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TCI

CAS 25121-86-2

2,5-Dibromothieno[2,3-b]thiophene TCI D4032

2,5-Dibromothieno[2,3-b]thiophene TCI D4032
Rp 9.621.150,00
Rp 9.621.150,00
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TCI D4032 2,5-Dibromothieno[2,3-b]thiophene is a polymer semiconductor building block constructed around a thienothiophene core — two fused thiophene rings that form a bicyclic system with extended conjugation. The two bromine atoms at the 2 and 5 positions sit at opposite ends of this fused framework, which makes them ideal connection points for cross-coupling reactions and polymerization. In materials science laboratories, this compound is used to insert a rigid, planar thienothiophene unit into the conjugated polymer chains or small-molecule semiconductors that researchers are developing.

The properties that make the thieno[2,3-b]thiophene unit so highly valued are its structural rigidity and flatness. The fused rings restrict rotation between units, so the polymer chain maintains better conjugation than a single thiophene that is free to rotate. This flatness also promotes tight intermolecular packing through π–π stacking interactions, an important factor that determines charge carrier mobility in semiconductor thin films. The high sulfur content further strengthens interchain interactions, while the 2,5-bromine positions define the geometry of the resulting chain.

In Indonesian laboratories, this building block is typically handled in university and institutional materials science research groups working on organic semiconductors, conjugated polymers, and thin-film electronic materials. It is normally used at small synthetic scale during monomer preparation and polymerization studies, where the brominated positions are converted through cross-coupling steps. Researchers generally order it as part of a monomer set for organic electronics work and store it alongside other moisture-sensitive coupling substrates.

  • Conjugated polymer synthesis — the dibrominated positions serve as reliable polymerization handles, allowing the fused thienothiophene unit to be incorporated directly into a growing semiconducting backbone.
  • Cross-coupling reactions — the bromine atoms at positions 2 and 5 act as standard coupling sites, giving researchers a difunctional substrate for building extended conjugated systems in two directions.
  • Organic semiconductor small-molecule development — the rigid planar core can be end-capped with other aromatic units to produce well-defined small-molecule semiconductors for evaluation.
  • Semiconductor thin-film studies — the flat, sulfur-rich structure encourages tight π–π stacking, making this unit useful when researchers are targeting improved charge carrier mobility in deposited films.
  • Structure–property investigations of conjugation — because the fused rings restrict inter-unit rotation, this compound lets researchers compare conjugation retention against freely rotating single-thiophene analogues.

Brand TCI (Tokyo Chemical Industry)
CAS number 25121-86-2
Molecular formula —
Purity —
Category Materials Science > Material Building Blocks > Polymer/Macromolecule Semiconductor Building Blocks
Pack sizes —
Physical form —
Storage keep in a tightly closed container in a cool, dry place, protected from light and moisture
  • Chemical name: 2,5-Dibromothieno[2,3-b]thiophene
  • Product code: D4032

Store the material in its original tightly closed container in a cool, dry, well-ventilated area, away from direct sunlight and sources of heat or ignition. Amber glass or the supplied container is preferred to limit light exposure, and a desiccator or sealed secondary container helps protect the solid from atmospheric moisture during storage. Handle in a fume hood using nitrile gloves, safety glasses, and a laboratory coat, and avoid generating or inhaling dust. Weigh out only the quantity needed, reseal the container promptly after use, and keep it separated from strong oxidizing agents. Consult the manufacturer's safety data sheet before first use and follow institutional waste disposal procedures for halogenated organic residues.

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