1M Material: PB-3F, PCE10-2F, custom made and offered it is. 

Common Name: PCE10-2F, PB-3F

Chemical Name: Poly([2,6’-4,8-di(5-(2-ethylhexyl-3-fluoro)thienyl)benzo[1,2-b; 3,3-b]dithiophene]{3-fluorothieno-2[(2- ethylhexyl)carnonyl]thieno[3,4-b]thiophenediyl})

 Chemical Structure: 1M proprietary end-capped 

Lot number: YY26116CH Appearance: Deep purple solid 

Molecular weight (GPC): ~180K (Mw, PS Standard), polydispersity(PDI): ~1.5 

Solubility: Soluble in CHCl3, CB, and ODCB