College of Physics and Electronics;
North China University of Water Resources and Electric Power;
Zhengzhou 450046;
China;
State Key Laboratory of Molecular Reaction Dynamics;
Dalian Institute of Chemical Physics;
Chinese Academy of Sciences;
Dalian 116023;
China;
excited; state; intramolecular; proton; transfer; potential; energy; surface; intramolecular; charge; transfer; infrared; vibrational; spectra;