20804
Using alternative Au - NPs , including those stabilized with thiols , polymers , and bulky ligands , suggests that the amperometric enhancement of H2O2 is optimized at poly - l - lysine - linked film assemblies embedded with Au - NPs possessing small , charged , and conductive ( conjugated ) peripheral ligands .
 Chemical: Au; Chemical: thiols; Chemical: H2O2; Chemical: poly - l - lysine; Chemical: Au
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: Au, thiols, H2O2, poly - l - lysine, Au 
Answer:
 Chemical: Au; Chemical: thiols; Chemical: H2O2; Chemical: poly - l - lysine; Chemical: Au