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Description
TCI D4180 is 3,3'-Dihexyl-2,2'-bithiophene, a bithiophene compound built from two thiophene rings joined at the 2 and 2' positions, each carrying a hexyl chain at the 3 and 3' positions. As a heterocyclic building block, this compound serves as the base framework for constructing oligothiophenes and polythiophenes, the family of organic semiconductors that forms the backbone of carbon-based electronics research. In the laboratory, the material is used as a starting material for halogenation, borylation, stannylation, and coupling reactions that extend the conjugated system.
The characteristic that makes this compound a preferred choice is the combination of an electron-rich bithiophene core with two solubility-friendly hexyl chains. The bithiophene core provides the conjugated π system that acts as the charge transport pathway, while the long alkyl chains improve solubility in organic solvents so that derivative materials can be processed through solution techniques rather than vacuum evaporation alone. The position of the hexyl chains at carbons 3 and 3' places them directly adjacent to the inter-ring linking bond, giving a steric influence that determines the torsion angle between the rings and ultimately shapes the behaviour of the conjugated system.
In Indonesian laboratories, this building block is typically encountered in university and institutional research groups working on organic electronics, conducting polymers, and materials chemistry. It is handled in synthetic chemistry work at bench scale, where researchers carry out functionalization and cross-coupling steps before characterizing the resulting oligomers and polymers. Because it is supplied as a catalogue building block from TCI, it fits routine method development and graduate research programmes that require a consistent, well-defined thiophene starting material.
Laboratory Applications
- Oligothiophene synthesis — the 2 and 2' linked bithiophene core provides a ready-made two-ring unit that can be extended stepwise into longer, well-defined conjugated oligomers.
- Polythiophene preparation — after functionalization, the compound feeds into polymerization routes that build conducting and semiconducting polymer chains for organic electronics research.
- Halogenation chemistry — the thiophene rings offer reactive positions for introducing halogen handles, converting the building block into a substrate ready for subsequent coupling steps.
- Borylation and stannylation — the compound is converted into boron or tin functionalized intermediates that serve as coupling partners in Suzuki and Stille type reactions.
- Cross-coupling reactions — as a starting material for coupling chemistry, it allows researchers to extend the conjugated system and assemble larger π conjugated architectures for device studies.
Specifications
- Brand: TCI
- CAS Number: 125607-30-9
- Chemical name: 3,3'-Dihexyl-2,2'-bithiophene
- Category: Chemistry > Building Blocks > Heterocyclic Building Blocks
- Pack sizes: available in standard TCI catalogue pack sizes; please confirm the packaging option when ordering
- Storage: keep in a tightly closed original container, protected from light and stored according to the manufacturer's label instructions
Handling and Storage
Store the material in its original tightly closed container, kept in a cool, dry, and well-ventilated area away from light, heat, and ignition sources. Amber glass or the supplier's original packaging is suitable, and containers should be resealed promptly after each use to limit exposure to air and moisture. Handle the compound inside a fume hood, wearing safety glasses, gloves, and a laboratory coat. Keep it separated from strong oxidizing agents, avoid generating dust or aerosols, and transfer quantities using clean, dry glassware. Always consult the manufacturer's Safety Data Sheet before use, and dispose of residues and contaminated materials through approved chemical waste channels in accordance with institutional laboratory procedures.
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