13599
In conjunction with the solvent - independent rapid ( < 1 ps ) kinetics for the fluorescence decay and the solvent - dependent slow ( 7 - 20 ps ) kinetics for the ground - state recovery , we conclude that the SSHB modifies the potential energy surface for the tau torsion in a way that the IC occurs also for the twisted intermediates with a tau - torsion angle smaller than 90 degrees , which favors the formation of the Z isomers .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None