2746
Coupling between excitons of CdSe nanocrystal quantum dots ( NQDs ) and surface plasmon polaritons ( SPPs ) of an Ag film attached to a prism have been studied by steady - state and transient reflectivity measurements in the Kretschmann geometry .
 Chemical: CdSe; Chemical: Ag
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: CdSe; Chemical: Ag