M8662——bis(2-ethylhexyl) 5,5′-(2,6-dibromobenzo[1,2-b:4,5-b’]dithiophene-4,8-diyl)bis(thiophene-2-carboxylate)

M7171——(4,4,9,9-tetrakis(5-hexylthiophen-2-yl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b’]dithiophene-2,7-diyl)bis(trimethylstannane)