SEARCH Articles Figures Tables Excited singlet Excited singlet states Excited triplet Ground state vibrational Ground state, singlet, triplet Ground states vibrations Ground vibration Singlet excitation Singlet excited ground state Singlet ground states Singlet states Singlet-triplet Singlet-triplet excitation State, ground excited Triplet excitation Triplet excition Triplet ground states Triplet state Triplet state excitation Vibration excitation Vibration excited Vibrational excited state Vibrationally excited Vibrationally excited ground state