13508
Temperature - dependent XPS study shows that the thermal stability of the monolayers is higher than the typical stability of self - assembled monolayers ( SAMs ) of thiolates on gold .
 Chemical: thiolates
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: thiolates 
Answer:
 Chemical: thiolates