15310
We demonstrate the ability to select purely semiconducting species using poly [ ( 9 , 9 - dioctylfluorenyl - 2 , 7 - diyl ) - alt - co - ( 6 , 6 ' - { 2 , 2 ' - bipyridine } ) ] ( PFO - BPy ) and poly [ ( 9 , 9 - dihexylfluorenyl - 2 , 7 - diyl ) - co - ( 9 , 10 - anthracene ) ] ( PFH - A ) , producing samples with narrow and bright excitonic emission relative to comparable aqueous dispersions .
 Chemical: poly [ ( 9 , 9 - dioctylfluorenyl - 2 , 7 - diyl ) - alt - co - ( 6 , 6 ' - { 2 , 2 ' - bipyridine } ) ]; Chemical: PFO - BPy; Chemical: poly [ ( 9 , 9 - dihexylfluorenyl - 2 , 7 - diyl ) - co - ( 9 , 10 - anthracene ) ]; Chemical: PFH - A
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: poly [ ( 9 , 9 - dioctylfluorenyl - 2 , 7 - diyl ) - alt - co - ( 6 , 6 ' - { 2 , 2 ' - bipyridine } ) ], PFO - BPy, poly [ ( 9 , 9 - dihexylfluorenyl - 2 , 7 - diyl ) - co - ( 9 , 10 - anthracene ) ], PFH - A 
Answer:
 Chemical: poly [ ( 9 , 9 - dioctylfluorenyl - 2 , 7 - diyl ) - alt - co - ( 6 , 6 ' - { 2 , 2 ' - bipyridine } ) ]; Chemical: PFO - BPy; Chemical: poly [ ( 9 , 9 - dihexylfluorenyl - 2 , 7 - diyl ) - co - ( 9 , 10 - anthracene ) ]; Chemical: PFH - A