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Hybrid bilayers are formed by a Langmuir - Schaefer approach in which the lipid layer is physisorbed on top of a self - assembled monolayer of dodecanethiol on Pt with the polar heads pointing out from the surface .
 dodecanethiol, Pt
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 dodecanethiol, Pt