21689
The analysis is performed according to the three - capacitor model of the dipole potential of Langmuir monolayers ( Demchak , R . T . ; Fort , T . , Jr . J . Colloid Interface Sci . 1974 , 46 , 191 ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None