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Description
TCI D3928 3,4'-Dihexyl-2,2'-bithiophene is a bithiophene compound built from two thiophene rings joined directly at their 2 and 2' positions, each carrying a hexyl chain at the 3 and 4' positions respectively. It belongs to the family of heterocyclic building blocks developed for materials chemistry, particularly as a monomer or constituent unit for conjugated polymers and small-molecule organic semiconductors. In the laboratory, materials of this kind serve as the starting point for preparing active layers used in organic field-effect transistors, organic solar cells, and chemical sensors based on conjugated polymers.
The characteristics that make this compound attractive are the combination of an electron-rich thiophene backbone with long alkyl side chains. The bithiophene framework provides extended π-conjugation, allowing the resulting material to transport charge, while the two hexyl chains improve solubility in common organic solvents so that the polymers or oligomers synthesized from it can be processed by solution-based methods such as spin coating and printing. The asymmetric 3 and 4' substitution pattern is equally important, because it governs the regioregularity of the polymer chain, a factor that strongly influences the ordering and performance of the final film.
In Indonesian laboratories, this building block is typically used in university and institutional research groups working on organic electronics, polymer chemistry, and functional materials. It is normally handled at bench scale in synthetic chemistry laboratories equipped for air-sensitive and moisture-sensitive coupling reactions, where researchers prepare conjugated monomers and oligomers before device fabrication. It also supports teaching and postgraduate research programmes that introduce students to the synthesis and characterization of semiconducting organic materials.
Laboratory Applications
- Conjugated polymer synthesis — serves as a monomer unit whose extended π-conjugation and defined substitution pattern allow controlled construction of semiconducting polymer chains with predictable regioregularity.
- Organic field-effect transistor materials — the electron-rich thiophene backbone supports charge transport, making it a suitable precursor for the active semiconducting layers used in organic transistor research.
- Organic solar cell research — provides a bithiophene donor unit that can be incorporated into conjugated polymers or small molecules developed as light-harvesting materials for organic photovoltaic devices.
- Solution-processable material development — the two hexyl chains raise solubility in common organic solvents, enabling downstream materials to be deposited by spin coating, casting, and printing methods.
- Conjugated polymer chemical sensors — the semiconducting bithiophene framework underpins polymer sensing layers whose electronic response changes on interaction with target chemical analytes.
Specifications
- Brand: TCI (Tokyo Chemical Industry)
- CAS number: 135926-93-1
- Product code: D3928
- Category: Chemistry > Building Blocks > Heterocyclic Building Blocks
- Pack sizes: available in standard TCI research-scale packaging; please refer to the packaging options listed for this catalogue item
- Storage: keep in the original tightly closed container as indicated on the manufacturer's label
Handling and Storage
Store the product in its original tightly closed container, in a cool, dry, and well-ventilated place away from direct sunlight, heat sources, and ignition sources, following the storage conditions stated on the manufacturer's label and safety data sheet. Amber glass or the supplied original packaging is preferred to limit light exposure, and containers should be resealed promptly after each use to avoid moisture uptake and solvent contamination. Handle the compound in a fume hood while wearing safety glasses, gloves, and a laboratory coat, and avoid contact with skin, eyes, and clothing. Keep it separated from strong oxidizing agents, transfer with clean and dry glassware or spatulas, and dispose of residues and contaminated materials in accordance with applicable chemical waste procedures.
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