15297
The rate of ring - opening of the spiropyran - polymer brushes coatings has been determined in situ in the presence of different solvents , showing that the coloration rate is also influenced by the solvent polarity and therefore can be used as an additional parameter for solvent sensing .
 Chemical: spiropyran
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: spiropyran 
Answer:
 Chemical: spiropyran