{HEAD ~ The invention} relates to {TAIL ~ polymers} comprising fused selenophene rings, to their use as semiconductors or charge transport materials in optical, electrooptical or electronic devices, and to optical, electrooptical or electronic devices comprising them 
relates to
{ HEAD ~ The invention } relates to { TAIL ~ polymers } comprising fused selenophene rings , to their use as semiconductors or charge transport materials in optical , electrooptical or electronic devices , and to optical , electrooptical or electronic devices comprising them
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH