Lowest energy excitation

After this, Martinez and Ben-Nun applied the method to the photoexcitation of ethylene [88,247]. The lowest energy excitation is the HOMO-LUMO n n transition. These states are labeled A and Close in energy to... 

The 3 Pi/2, 3 P2/2 excited states involved in the sodium D lines are the lowest energy excited states of the atom. Consequently, in a discharge in the vapour at a pressure that is sufficiently high for collisional deactivation of excited states to occur readily, a majority of atoms find themselves in these states before emission of radiation has taken place. Therefore... 

A review16 with 89 references is given on the excited state properties of the low valent (0 and + 1) bi- and trinuclear complexes of Pd and Pt. Physical characterization of the nature of the lowest energy excited states along with their photoinduced chemical reactivities toward oxidative additions is discussed. 

Molecular orbital calculations on ethylene indicate that the lowest energy excited singlet and triplet states have a twisted geometry.(2) This geometry helps minimize electron-electron repulsion. Figure 9.1 gives the calculated... 

Inspecting the character tables of Figure 13, we notice that the first (lowest-energy) excited state, corresponding to the electronic transition jr -> ji, is, for the s-trans isomer, Bu, for the s-cis, Hi and finally for the skewed form, B. This transition is therefore electrically allowed in all three cases, being in-plane polarized for the former two cases as shown in Scheme 9. 

The lowest energy excited triplet state of FePc is known to have a life time of about 45 nanoseconds (33) and we expect the life time of the lowest energy excited triplet state of FePc(Im )2 Also to be in the same time scale. Electrochemical oxidation at the phthalocycuiine ligand oxidation... 

Time-resolved femtosecond (fs) absorption spectroscopy has been applied to investigate the earliest events of the decay of [Ru(bpy)3] " and provides information relating to the dynamics associated with the evolution of the Franck-Condon state to the lowest-energy excited state of [Ru(bpy)3]. Within 300 fs of the initial excitation, the latter process is effectively complete. The conclusions of this work are of particular importance in terms of updating the views concerning the relaxation of [Ru(bpy)3]. ... 

Since for 3 there exist mixed contributions (m n Eq. (5)), a model which follows the evolution of P with the number of lowest-energy excited states cannot highlight the tme state contributions. Dirk and Kuzik [55] have proposed the missing-state analysis which determines the relative importance of states by considering the effect of their absence. This relative importance is defined as... 

The yellow flame colour is due to atomic emission from sodium where the spectrum is dominated by a broad emission centred on 590 nm (the resonance transition is that from the ground state to the lowest energy excited state in absorption and the reverse will apply in emission). 

The CR-EOMCCSD(T) sf method is currently under development, so that we cannot show too many examples of the actual applications yet. However, we have already tested the CR-EOMCCSD(T) approach using the electronic excitations in the CH+ ion as an example. The CR-EOMCCSD(T)j > results for the three lowest-energy excited states of the symmetry and two lowest-energy states of the H and symmetries, obtained at the equilibrium geometry Rc-h = Re = 2.13713 bohr and the same [5s3pld/3slp] basis set of Ref. [103] as used in the MMCC(2,3)/CI, MMCC(2,3)/PT, and CR-EOMCCSD(T) calculations discussed in Section 3.1, are shown in Table 2. As one can see, the CR-EOMCCSD(T) 5f approach is as effective in improving the EOMCCSD results as the CR-EOMCCSD(T) method analyzed in Section 3.1.2. This is particularly true for the 2 1 A, and 2 A states that are dominated by double exci-... 

The nature of the lowest energy excited state and the probability of excimer emission... 

Excimer Photodimer Lowest energy excited state... 

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