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Product Code B371-500mg
Price $300 ex. VAT

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BDD, for the synthesis of high performance OPV polymer semiconductors

High quality and high purity monomer available online


1,3-Bis(5-bromothiophen-2-yl)-5,7-bis(2-ethylhexyl)benzo[1,2-c:4,5-c']dithiophene-4,8-dione, or BDD, is an electron deficient building block which can be used for the synthesis of low band-gap polymer semiconductors such as PBDB-T (PCE12). With two side-branched side chains, the structure is more soluble and more easily processable for device fabrications.

BDD has been used to great success in our own lab for the synthesis of the high-performance OPV polymer semiconductor, PCE12 (PBDB-T).

If you are ordering the item with quantity over 5 g please contact our customer care team for a lead time.

Capped with bromide

Capped with bromide

a PCE12 monomer

Benzodithiophene-dione building block

Benzodithiophene-dione building block

for semiconductors, OFETs, and solar cells

Worldwide shipping for 1415929-78-0

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High purity 1415929-78-0

High purity

>98% High purity

General Information

CAS Number 1415929-78-0
Chemical Formula C34H38S4O2Br2
Molecular Weight 766.73 g/mol
Synonyms BDD, 1,3-Bis(2-ethylhexyl)-5,7-di(bromothiophen-2-yl)benzo[1,2-c:4,5-c′]-dithiophene-4,8-dione, DiEH-Benzodithiophene-dione-2Th-2Br
Classification / Family Thiophene, Fused thiophene, Semiconductor synthesis intermediates, Low band gap polymers, OFETs, Organic photovoltaics, polymer solar cells

Chemical Structure

pce12 monomer
Chemical structure of BDD

Product Details

Purity >98% (by 1H NMR in CDCl3)
Melting Point N/A
Appearance Yellowish orange powder/crystals

MSDS Documentation

BDD MSDSBDD MSDS Sheet

Literature and Reviews

  1. Design, Application, and Morphology Study of a New Photovoltaic Polymer with Strong Aggregation in Solution State, D. Qian et al., Macromolecules, 45, 9611−9617 (2012); DOI: 10.1021/ma301900h.
  2. Fullerene-Free Polymer Solar Cells with over 11% Effi ciency and Excellent Thermal Stability, W. Zhao et al., Adv. Mater., 28, 4734–4739 (2016); DOI: 10.1002/adma.201600281.
  3. Energy-Level Modulation of Small-Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells, S. Li et al, Adv. Mater., 28, 9423–9429 (2016); DOI: 10.1002/adma.201602776.
  4. Ternary Polymer Solar Cells based on Two Acceptors and One Donor for Achieving 12.2% Efficiency, W. Zhao et al., Adv. Mater., (2016); DOI: 10.1002/adma.201604059.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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