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4,7-Dibromo-5,6-difluoro-2,1,3-benzothiadiazole


Product Code B161
Price £159.00 ex. VAT

5,6-Difluoro-4,7-dibromobenzo[c][1,2,5]thiadiazole is the building block/monomer for organic semiconductor synthesis in the application of light-emitting diodes and photovoltaic devices. Extra fluorine atoms on the benzothiadiazole ring makes the compounds more electron-withdrawing when the unit is embedded into low-band gap polymer semiconductors, to introduce better electron affinity and further lower the band gap of the semiconducting materials.

It is the intermediate for the synthesis of i.e. 4-7-bis(5-bromo-4-2-octyldodecylthiophen-2-yl)-5,6-difluorobenzo[c][1,2,5]-thiadiazole which is the monomer for polymer semiconductor PffBT4T-2OD (PCE11) with high device performance efficiency.

synthesis of pce11 monomer difluoro-dibromobenzothiadiazole,  bis-bromo-octyldodecylthiophenyl-difluorobenzothiadiazole
Synthesis of 4-7-bis(5-bromo-4-2-octyldodecylthiophen-2-yl)-5,6-difluorobenzo[c][1,2,5]-thiadiazole with 5,6-difluoro-2,3-diamine dihydrochloric acid via 5,6-difluoro-4,7-dibromobenzo[c][1,2,5]-thiadiazole

General Information

CAS number 1295502-53-2
Chemical formula C6Br2F2N2S
Molecular weight 329.95 g/mol
Synonyms
  • 4,7-Dibromo-5,6-difluorobenzo[c][1,2,5]thiadiazole
  • 5,6-Difluoro-4,7-dibromobenzo-2,1,3-thiadiazole
  • 5,6-Difluoro-4,7-dibromobenzo[c][1,2,5]thiadiazole
  • DFBT
  • bb-F2BT
Classification / Family Benzothiodiazole, Fluorinated compounds, Organic materials, Semiconductor synthesis, Acceptors, Organic Photovoltaics, Polymer solar cells, Monomers, Building blocks

Product Details

Purity >98%
Melting point 153-156°C
Colour White/Off-white crystalline solid

Chemical Structure

chemical structure dibromodifluorobenzothiadiazole, pce11 monomer, difluorodibromobenzothiadiazole, cas number1295502-53-2
Chemical structure of 5,6-Difluoro-4,7-dibromobenzo[c][1,2,5]thiadiazole

MSDS Documentation

DFBT MSDSDFBT MSDS sheet

Literature and Reviews

  1. Development of Fluorinated Benzothiadiazole as a Structural Unit for a Polymer Solar Cell of 7% Efficiency, H. Zhou et al., Angew. Chem. Int. Ed., 50, 2995-2998 (2011)
  2. Fluorinated Benzothiadiazole-Based Conjugated Polymers for High-Performance Polymer Solar Cells without Any Processing Additives or Post-treatments, N. Wang et al., J. Am. Chem. Soc., 135 (45), 17060-17068 (2013)
  3. Highly Efficient Inverted Organic Solar Cells Through Material and Interfacial Engineering of Indacenodithieno[3,2- b ]thiophene-Based Polymers and Devices, J.J. Intemann et al., Adv. Funct. Mater., 24, 1465-1473 (2014)

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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