3 ) it was found that four newly " d - - d " type molecular materials have the same behavior as " d - - a " type materials in solution . lippert equation confirmed that the dipole moment of the exited - state were much bigger than that in the ground - state . 4 ) the relative intensity was improved when light - emitting molecular materials in p - cyclodextrim solution 3 、发现本文合成的四个“ d - - d ”型分子材料具有与不对称“ d - a ”型分子相同的溶剂效应， lippert方程证实了四个“ d - - d ”分子其激发态偶极矩大于基态偶极矩，从而导致相应荧光发射随溶剂极性增大而红移。
