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The compounds resulting from the cation exchange of the anions 1 - 9 to give TBA ( a ) and DMDOA ( b ) salts , and additionally for compounds 1 , 2 and 3 , tetraphenylphosphonium ( PPh ( 4 ) ) ( c ) salts , are explored at the air / water interface using scanning force microscopy , showing a range of architectures including hexagonal structures , nanofibers and other supramolecular forms .
 Chemical: TBA; Chemical: DMDOA; Chemical: tetraphenylphosphonium; Chemical: PPh ( 4 )
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: TBA; Chemical: DMDOA; Chemical: tetraphenylphosphonium; Chemical: PPh ( 4 )