6579
The GCE modified with CNT dispersions in polyethyleneimine ( PEI ) provided lower overpotentials , higher sensitivity and much higher signal stability under a dynamic regime than bare GCEs .
 Chemical: polyethyleneimine; Chemical: PEI
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: polyethyleneimine; Chemical: PEI