12018
We report a simple and effective approach for the preparation of double layer - encapsulated quantum dots ( DL - Qdots ) composed of alkyl - capping ligands to interdigitate with hydrophobic , protective agents on the surface of AgInS ( 2 ) / ZnS quantum dots ( Qdots ) , which allow phase transfer of hydrophobic Qdots from the organic phase into the aqueous phase .
 Chemical: AgInS ( 2 ); Chemical: ZnS
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: AgInS ( 2 ), ZnS 
Answer:
 Chemical: AgInS ( 2 ); Chemical: ZnS