• 2,5-Dichloro-3,4-ethylenedioxythiophene (CAS 225518-49-0) - TCI D4746 - AMI Scientific
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TCI

CAS 225518-49-0

2,5-Dichloro-3,4-ethylenedioxythiophene TCI D4746

2,5-Dichloro-3,4-ethylenedioxythiophene TCI D4746
Rp 1.405.950,00
Rp 1.405.950,00
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TCI D4746 2,5-Dichloro-3,4-ethylenedioxythiophene is a derivative of EDOT (3,4-ethylenedioxythiophene) in which both alpha positions of the thiophene ring have been substituted with chlorine atoms. In the laboratory, this compound serves as a building block for assembling conjugated oligomers and polymers that form the backbone of organic semiconductors. The ethylenedioxy bridge at the 3- and 4-positions locks the ring conformation while contributing electron density, whereas the two chlorine atoms at the 2- and 5-positions provide clearly defined reactive sites for coupling steps and further transformations. This dual role is what places it among the key reagents on the shelves of organic electronic materials research groups.

The characteristics that make this material a preferred choice lie in the combination of its electronic behaviour and the controllability of its reactions. The EDOT unit is well known as a strong electron donor capable of lowering the band gap of conjugated materials and improving the stability of their doped states, while the dichloride substitution delivers clear regioselectivity so that researchers do not have to guess where the reaction will occur. The relatively rigid bicyclic structure also helps polymer chains organise themselves more consistently, which supports reproducible work when a synthetic route has to be repeated across several batches.

In Indonesian laboratories, this compound is typically found in university and institutional research groups working on organic electronic materials, conductive polymers, and conjugated macromolecule synthesis. It is generally used at bench scale for exploratory synthesis, method development, and the preparation of monomer or oligomer intermediates that are later characterised and processed further. Because it is a specialty building block rather than a bulk reagent, it is usually ordered in small quantities matched to a defined experimental programme and stored with other sensitive synthetic reagents.

  • Conjugated polymer synthesis: the two alpha-chlorine substituents act as defined leaving positions for polymerisation chemistry, allowing controlled chain growth toward organic semiconductor backbones.
  • Cross-coupling reactions: the dichloride functionality provides unambiguous reaction sites, so researchers can build oligomers step by step without competing substitution at unintended ring positions.
  • Organic semiconductor material development: the strong electron-donating EDOT unit lowers the band gap of the resulting conjugated systems, making it useful for tuning electronic properties.
  • Conductive polymer research: the ethylenedioxy bridge improves the stability of the doped state, which supports studies of charge transport and doping behaviour in polymer films.
  • Structure-property studies of macromolecules: the rigid bicyclic framework promotes consistent chain organisation, helping researchers correlate molecular architecture with measured material performance.

Brand TCI
CAS number 225518-49-0
Molecular formula —
Purity —
Category Materials Science > Material Building Blocks > Polymer/Macromolecule Semiconductor Building Blocks
Pack sizes available in standard TCI research pack sizes; please confirm the currently offered pack size when ordering
Physical form —
Storage —
  • Chemical name: 2,5-Dichloro-3,4-ethylenedioxythiophene
  • Product code: D4746

Store the container tightly closed in a cool, dry, well-ventilated place, away from direct sunlight, heat sources, and incompatible materials, and follow the storage conditions stated on the manufacturer's label and safety data sheet for this product. Keep the material in its original supplier container, or in a chemically compatible sealed glass container that is clearly labelled with the product name and CAS number. Handle inside a fume hood using nitrile gloves, safety goggles, and a laboratory coat, and avoid inhalation of dust or vapour and contact with skin and eyes. Return the container to controlled storage promptly after weighing, and dispose of residues and contaminated consumables as chemical waste in accordance with institutional procedures.

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