FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code B421-500mg
Price £310 ex. VAT

Specifications | MSDS | Literature and Reviews


FBTA-HD, 4,7-bis(5-bromothiophen-2-yl)-5,6-difluoro-2-(2-hexyldecyl)-2H-benzo[d][1,2,3]triazole (CAS number 1887135-96-7) is an electron-deficient building block for the synthesis of medium band-gap polymer semiconductors, such as J71, in the application of OPV devices.

Capped with bromide

Capped with bromide

For facile coupling reactions

Worldwide shipping for 1887135-96-7

Worldwide shipping

Quick and reliable shipping

Fluorinated building block

Benzotriazole building block

For semiconductors, OFETs, and solar cells

High purity 1887135-96-7

High purity

>98% High purity

General Information


CAS Number 1887135-96-7
Chemical Formula C30H37Br2F2N3S2
Molecular Weight 701.57 g/mol
Synonyms 4,7-bis(5-bromothiophen-2-yl)-5,6-difluoro-2-(2-hexyldecyl)-2H-benzo[d][1,2,3]triazole, DFBTA-2ThBr-HD
Classification / Family Thiophene, Heterocyclic five-membered ring, Organic semiconducting materials, Semiconductor Synthesis, Low band-gap polymers, OFETs, OLED, Organic Photovoltaics, Polymer Solar Cells

Chemical Structure


FBTA-HD, 1887135-96-7, 4,7-bis(5-bromothiophen-2-yl)-5,6-difluoro-2-(2-hexyldecyl)-2H-benzo[d][1,2,3]triazole
Chemical structure of FBTA-HD, CAS 1887135-96-7

Product Details


Purity >98%
Melting Point N/A
Appearance Yellow powder/crystals

MSDS Documentation


DFBTA-2ThBr-HD MSDSDFBTA-2ThBr-HD MSDS Sheet

Literature and Reviews


  1. Conjugated Side-Chain-Isolated D–A Copolymers Based on Benzo[1,2-b:4,5-b′]dithiophene-alt-dithienylbenzotriazole: Synthesis and Photovoltaic Properties, J. Min et al., Chem. Mater., 24 (16), 3247–3254 (2012); DOI: 10.1021/cm3017006.
  2. 11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor, H. Bin et al., Nat. Commun., 7:13651 (2016); DOI: 10.1038/ncomms13651.
  3. Non-Fullerene Polymer Solar Cells Based on Alkylthio and Fluorine Substituted 2D-Conjugated Polymers Reach 9.5% Efficiency, H. Bin et al., J. Am. Chem. Soc., 2016, 138 (13), 4657–4664 (2016); DOI: 10.1021/jacs.6b01744

Return to the top