7857
For initial excitation on phthalocyanine , hot CT excitons are formed in 10 ( - 13 ) s , followed by relaxation to lower energies and shorter electron - hole distances on a 10 ( - 12 ) s timescale .
 Chemical: phthalocyanine
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: phthalocyanine