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Product Code B641-1g
Price £400 ex. VAT

DTS-EH-Sn, for the synthesis of low bandgap semiconducting polymers

High-quality monomer for applications in OLED, OPV and OFET devices


Specifications | MSDS | Literature and Reviews


DTS-EH-Sn (CAS number 1089687-06-8), namely 4,4'-Bis(2-ethylhexyl)-5,5'-bis(trimethyltin)-dithieno[3,2-b:2,3-d]silole, is the intermediate for the synthesis of low bandgap semiconducting polymers such as PSBTBT and PBBTSiD which are widely used in OLED, OPV and OFET devices.

Compared to C-C bond, C–Si bond has larger bond length which could result in improved π-π stacking of the molecules. The greater C-Si bond length also can reduce steric hindrance from the bulky alkyl side chains thereby to increase semi-crystallinity of the polymers containing dithienosilole (DTS) unit in their backbones.

General Information


CAS Number 1089687-06-8
Chemical Formula C30H54S2SiSn2
Molecular Weight 744.39 g/mol
Full Name 4,4'-Bis(2-ethylhexyl)-5,5'-bis(trimethyltin)-dithieno[3,2-b:2,3-d]silole
Synonyms DTS26-2Sn, 5,5′-bis(trimethylstannyl)-3,3′-bis(2-ethylhexyl)silylene-2,2′-bithiophene
Classification / Family Dithienosilole (DTS) derivatives, Organic semiconducting materials, Semiconductor Synthesis, Low band gap polymers, Organic Photovoltaics

Chemical Structure


1089687-06-8, DTS-EH-Sn, 4,4'-Bis(2-ethylhexyl)-5,5'-bis(trimethyltin)-dithieno[3,2-b:2,3-d]silole
Chemical structure of 4,4'-Bis(2-ethylhexyl)-5,5'-bis(trimethyltin)-dithieno[3,2-b:2,3-d]silole (DTS-EH-Sn), CAS No. 1089687-06-8

Product Details


Purity 97%
Boiling Point N/A
Appearance Yellowish to dark green liquid

MSDS Documentation


DTS-EH-Sn MSDS SheetDTS-EH-Sn MSDS sheet

Literature and Reviews


  1. Synthesis and Photovoltaic Properties of Dithieno[3,2-b:2',3'-d]silole-Based conjugated copolymer, S. Wena et al., J. Mater. Chem. A, 3, 13794-13800 (2015); doi: 10.1039/C5TA01523E.
  2. Surface Initiated Polymerization of A-A/B-B Type Conjugated Monomers by Palladium Catalyzed Stille Polycondensation: Towards Low Band-Gap Polymer Brushes, H. Awada et al., RSC Adv., 5, 78436-78440 (2015); doi: 10.1039/C5RA08027D.
  3. Fluorinated low band gap copolymer based on dithienosilole-benzothiadiazole for high-performance photovoltaic device, H. Lv et al., Polym. Chem., 5, 6279-6286 (2014); doi: 10.1039/C4PY00758A.

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