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Product Code B531-500mg
Price $550 ex. VAT

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High purity BDTT-Cl-Sn, for applications in highly efficient OSCs and OPVs

For the synthesis of small molecular donors and low band gap semiconducting polymers


2,6-bis(trimethytin)-4,8-bis(5-(2-ethylhexyl)-4-chlorothiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene (BDTT-Cl-Sn) is an electron-rich building block used for the synthesis of either small molecular donors or low band-gap polymer semiconductors (like PBDB-T-2Cl) for highly-efficient OSCs and OPV applications.

It is believed that electron density can be delocalised more effectively to the halogen atom in Th-Cl than in Th-F. Also bearing two ethylhexyl side chains, with fused thiophenes and thiophenes as electron-rich pendants, BDTT-Cl-Sn offers good solubility for the targeted materials.

General Information

CAS Number 2239295-69-1
Chemical Formula C40H56Cl2S4Sn2
Molecular Weight 973.46 g/mol
Full Name 2,6-bis(trimethytin)-4,8-bis(5-(2-ethylhexyl)-4-chlorothiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene
Synonyms
  • BDTTDClSn
  • 4,8-Bis(5-(2-ethylhexyl)-4-chlorothiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene-2,6-diyl)bis(trimethylstannane
Classification / Family Thiophene, Fused thiophene, Benzo-dithiophene heterocylic aromatics, Five-membered ring, Semiconductor synthesis intermediates, Low band-gap polymers, OFETs, Organic photovoltaics, Polymer solar cells

Chemical Structure

BDTT-Cl-Sn structure
Chemical structure of BDTT-Cl-Sn

Product Details

Purity >98% (1H-NMR)
Melting Point N/A
Appearance Light yellow crystals

MSDS Documentation

BDTTDClSn MSDSBDTTDClSn MSDS Sheet

Literature and Reviews

  1. Over 14% Efficiency in Polymer Solar Cells Enabled by a Chlorinated Polymer Donor, S. Zhang et al., Adv.Mater., 30, 1800868 (2018); DOI: 10.1002/adma.201800868.
  2. Chlorine substituted 2D-conjugated polymer for high-performance polymer solar cells with 13.1% efficiency via toluene processing, Q. Fan et al., Nano Energy 48, 413–420 (2018); doi: 10.1016/j.nanoen.2018.04.002.
  3. Fluorination vs. chlorination: a case study on high performance organic photovoltaic materials, Y. Zhang et al., Sci. China Chem., 61 (10), 1328–1337 (2018); doi: 10.1007/s11426-018-9260-2.

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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