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The complete and reversible charge - selective sequestration of fluorophores by a weak polyelectrolyte brush , poly ( 2 - ( dimethylamino ) ethylmethacrylate ) ( PDMAEMA ) was demonstrated using fluorescence correlation spectroscopy ( FCS ) .
 Chemical: poly ( 2 - ( dimethylamino ) ethylmethacrylate ); Chemical: PDMAEMA
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: poly ( 2 - ( dimethylamino ) ethylmethacrylate ); Chemical: PDMAEMA