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Functionalization of the Au / SiO2 core / shell nanoparticles with the OTMS organic ligand was then necessary in order to transfer the Au / SiO2 core / shell nanoparticles from an ethanol solution into an OPV polymer - compatible solvent , such as dichlorobenzene ( DCB ) .
 Chemical: Au; Chemical: SiO2; Chemical: OTMS; Chemical: Au; Chemical: SiO2; Chemical: ethanol; Chemical: dichlorobenzene; Chemical: DCB
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: Au; Chemical: SiO2; Chemical: OTMS; Chemical: Au; Chemical: SiO2; Chemical: ethanol; Chemical: dichlorobenzene; Chemical: DCB