BDTOEHSn

CAS Number 1160823-78-8

Chemistry Building Blocks, Heterocyclic Building Blocks, Materials, Monomers, Organotin Compounds

BDTOEHSn, for the synthesis of low bandgap semiconducting polymers

High quality and high purity monomer available online

Specifications | MSDS | Literature and Reviews

4,8-Bis[(2-ethylhexyl)oxy]-2,6-bis(trimethylstannyl)benzo[1,2-b:4,5-b']dithiophene (BDTOEHSn), CAS number 1160823-78-8, is the intermediate for the synthesis of low bandgap semiconducting polymers such as PTB7 and PBDTTPD. Ethylhexyl side chains can help to promote stability and solubility of the target structure or polymer.

Benzo[1,2-b:4,5-b']dithiophene (BDT) is one of the widely used building blocks to produce polymer structures for highly efficient organic solar cells, in a blend with fullerene or non-fullerene acceptors.

General Information

CAS Number	1160823-78-8
Chemical Formula	C₃₂H₅₄O₂S₂Sn₂
Molecular Weight	772.32 g/mol
Full Name	4,8-Bis[(2-ethylhexyl)oxy]-2,6-bis(trimethylstannyl)benzo[1,2-b:4,5-b']dithiophene
Synonyms	2,6-Bis(trimethyltin)-4,8-bis(2-ethylhexyloxy)benzo[1,2-b:4,5-b′]dithiophene; 1,1′-[4,8-Bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl]bis[1,1,1-trimethyl]stannane
Classification / Family	Benzodithiophene (BDT) derivatives, Organic semiconducting materials, Semiconductor Synthesis, Low band gap polymers, Organic Photovoltaics.

Chemical Structure

BDTOEHSn, 1160823-78-8 — Chemical structure of 4,8-Bis[(2-ethylhexyl)oxy]-2,6-bis(trimethylstannyl)benzo[1,2-b:4,5-b']dithiophene (BDTOEHSn), CAS 1160823-78-8

Product Details

Purity	>98%
Melting Point	70-75 °C
Appearance	White crystals/powder

MSDS Documentation

BDTOEHSn MSDS sheet

Literature and Reviews

Improving the long-term stability of PBDTTPD polymer solar cells through material purification aimed at removing organic impurities, W. Mateker et al., Energy Environ. Sci., 6, 2529 (2013); DOI: 10.1039/c3ee41328d.
Interplay Between Side Chain Pattern, Polymer Aggregation, and Charge Carrier Dynamics in PBDTTPD:PCBM Bulk-Heterojunction Solar Cells, C. Dyer-Smith et al., Adv. Energy Mater., 5(9), 1401778 (2015); doi: 10.1002/aenm.201401778.
Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in PTB7:PC71BM Solar Cells, B. Collins et al., Adv. Energy Mater., 3(1), 1200377 (2013); DOI:10.1002/aenm.201200377.

Electron Collection as a Limit to Polymer:PCBM Solar Cell Efficiency: Effect of Blend Microstructure on Carrier Mobility and Device Performance in PTB7:PCBM, S. Foster et al., Adv. Energy Mater., 1400311 (2014); DOI: 10.1002/aenm.201400311.