2-Ethylhexyl 4,6-dibromo-3-fluorothieno[3,4-b]thiophene-2-carboxylate

Order Code: B361
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Note: this monomer has been used in our own lab for the synthesis of PCE10 and PTB-7.

General Information

CAS number 1237479-38-7
Chemical formula C15H17Br2FO2S2
Molecular weight 472.23 g/mol
4,6-Dibromo-3-fluorothieno[3,4-b]thiophene-2-carboxylic acid 2-ethylhexyl ester
Classification / Family Thiophene, Fused thiophene, Semiconductor synthesis intermediates, Low band gap polymers, OFETs, Organic Photovoltaics, Polymer solar cells


Product Details

Purity >99% (by HPLC)
Melting point 37 - 41 °C
Appearance Off-white solid powder/crystals


Chemical Structure

PTB7 PCE10 monomer
Chemical structure of 2-Ethylhexyl 4,6-Dibromo-3-fluorothieno[3,4-b]thiophene-2-carboxylate. CAS No.: 1237479-38-7. Chemical formula: C15H17Br2FO2S2.



2-Ethylhexyl 4,6-Dibromo-3-fluorothieno[3,4-b]thiophene-2-carboxylate has been used for the synthesis low band gap polymer semiconductors such as PTB-7 and PCE10 (also called PTB7-Th or PBDTTT-EFT) for OFETs, OLED, PLED and OPV applications.


Literature and Reviews

  1. Study of Optical Properties and Molecular Aggregation of Conjugated Low Band Gap Copolymers: PTB7 and PTB7-Th, F. Bencheikh et al., J. Phys. Chem. C 2015, 119, 24643−24648 (2015); DOI: 10.1021/acs.jpcc.5b07803.
  2. Random terpolymer with a cost-effective monomer and comparable efficiency to PTB7-Th for bulk-heterojunction polymer solar cells, T. Jiang et al., Polym. Chem., 7, 926-932 (2016); DOI: 10.1039/C5PY01771H.
  3. Tuning nanoscale morphology using mixed solvents and solvent vapor treatment for high performance polymer solar cells, D. Wang et al., RSC Adv., 4, 48724–48733 (2014); DOI: 10.1039/c4ra09417d.