{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 ~ 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
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