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Product Code B591-1g
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EHThCHO-Br, for the synthesis of low band gap non-fullerene acceptors

High purity monomer available online for fast, secure dispatch


5-Bromo-4-(2-ethylhexyl)-2-thiophenecarboxaldehyde (EHThCHO-Br) is the intermediate that is used for the synthesis of low band-gap non-fullerene acceptors (NFAs). Semiconducting materials bearing 5-bromo-4-(2-ethylhexyl)-2-thiophenecarboxaldehyde such as IEIC and IEIC-4F exhibit good thermal stability, strong absorption in the 500–750 nm region with great extinction coefficients.

Ternary non-fullerene polymer solar cell based on PBDB-T:ITCN:IT-M mixture gained a power conversion efficiency of 12.16% with increased short-circuit current density (Jsc) and open-circuit voltage (Voc) comparing PBDB-T:ITM-based device.

Functional thiophene derivative

Functional thiophene derivative

Synthsis of semiconducting materials

High purity 1356861-54-5

High purity

>98% EHThCHO-Br Purity

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Ethylhexyloxyl group

Ethylhexyloxyl group

enhances solubility and lowers the bandgap

General Information

CAS Number 1356861-54-5
Chemical Formula C13H19BrOS
Molecular Weight 303.26 g/mol
Synonyms 5-Bromo-4-(2-ethylhexyl)-2-thiophenecarboxaldehyde
Classification / Family Thiophene derivatives, Organic semiconducting materials, Semiconductor Synthesis, Low band gap polymers, OFETs, OLED, Organic Photovoltaics, None-fullerene acceptors (NFAs), NFA-OSCs

Chemical Structure

5-bromo-4-(2-ethylhexyl)-2-thiophenecarboxaldehyde chemical structure
Chemical structure of 5-Bromo-4-(2-ethylhexyl)-2-thiophenecarboxaldehyde

Product Details

Purity >98%
Melting Point N/A
Appearance Brown liquid

MSDS Documentation

EHThCHO-Br MSDSEHThCHO-Br MSDS Sheet

Literature and Reviews

  1. High-performance fullerene-free polymer solar cells with 6.31% efficiency, Y. Lin etal., Energy Environ. Sci.,8, 610-616 (2015); DOI:10.1039/C4EE03424D.
  2. Ternary Nonfullerene Polymer Solar Cells with 12.16% Efficiency by Introducing One Acceptor with Cascading Energy Level and Complementary Absorption. W. Jiang et al., Adv Mater., 30(1), (2018); doi: 10.1002/adma.201703005.

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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