Order Code: B431
MSDS sheet


(excluding Taxes)


General Information

CAS number 2035466-88-5 
Chemical formula C42H66S4Si2Sn2
Molecular weight 992.82 g/mol
Synonyms 2,6-Bis(trimethylstannyl)-4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene
Classification / Family Thiophene, Fused thiophene, Semiconductor synthesis intermediates, Low band-gap polymers, OFETs, Organic photovoltaics, polymer solar cells


Product Details

Purity > 98% (by 1H NMR in CDCl3)
Melting point n/a
Appearance White powder/crystals


Chemical Structure

BDT-TPSTh, 2035466-88-5,  2,6-bis(trimethyltin)-(4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene)
Chemical structure of 2,6-bis(trimethylstannyl)-4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene; CAS No.: 2035466-88-5 ; Chemical Formula: C42 H66 S4 Si2 Sn2.



2,6-Bis(trimethylstannyl)-4,8-bis(5-(tripropylsilyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene, also referred to as BDT-Th(TPS)-Sn, has been used for the synthesis of J61, J71 in the application of tandem organic solar cells.


Literature and Reviews

  1. 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.