{TAIL ~ The invention} relates to polymers comprising {HEAD ~ 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 
{ TAIL ~ The invention } relates to polymers comprising { HEAD ~ 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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