6682
Bifunctional CA - PEG ( catechol - poly ( ethylene glycol ) ) and multifunctional CA - PEG - PGA / PEVGE ( poly ( glycidyl amine ) / poly ( ethylene glycol vinyl glycidyl ether ) ) ligands for the functionalization and solubilization of nanoparticles are introduced .
 Chemical: PEG; Chemical: catechol; Chemical: poly ( ethylene glycol ); Chemical: PEG; Chemical: PGA; Chemical: PEVGE; Chemical: poly ( glycidyl amine ); Chemical: poly ( ethylene glycol vinyl glycidyl ether )
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: PEG; Chemical: catechol; Chemical: poly ( ethylene glycol ); Chemical: PEG; Chemical: PGA; Chemical: PEVGE; Chemical: poly ( glycidyl amine ); Chemical: poly ( ethylene glycol vinyl glycidyl ether )