comprising contacting {HEAD ~ a 3,4 dialkoxythiophene} with {TAIL ~ an ω halo 1,2 alkanediol} in the presence of an acid 
with
comprising contacting { HEAD ~ a 3,4 dialkoxythiophene } with { TAIL ~ an ω halo 1,2 alkanediol } in the presence of an acid
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH