7257
We report the design , synthesis and photophysical properties of highly solvatochromic donor / acceptor substituted naphthalimide based fluorophores .
 Chemical: naphthalimide
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: naphthalimide