18185
PCDA spontaneously assembles into well - ordered domains consisting of one - dimensional molecular chains that coat the entire graphene surface in a manner consistent with the symmetry of the underlying graphene lattice .
 Chemical: PCDA; Chemical: graphene; Chemical: graphene
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: PCDA; Chemical: graphene; Chemical: graphene