6762
Water - soluble star - like poly ( vinyl alcohol ) / C ( 60 ) and poly { [ poly ( ethylene glycol ) acrylate ] - co - ( vinyl acetate ) } / C ( 60 ) nanohybrids are prepared by grafting macroradicals onto C ( 60 ) and are assessed as photosensitizers for photodynamic therapy .
 Chemical: poly ( vinyl alcohol ); Chemical: C ( 60 ); Chemical: poly { [ poly ( ethylene glycol ) acrylate ] - co - ( vinyl acetate ) }; Chemical: C ( 60 ); Chemical: C ( 60 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: poly ( vinyl alcohol ); Chemical: C ( 60 ); Chemical: poly { [ poly ( ethylene glycol ) acrylate ] - co - ( vinyl acetate ) }; Chemical: C ( 60 ); Chemical: C ( 60 )