Tris(8-hydroxyquinoline)aluminum(III), Alq3, is used in organic light-emitting diodes (OLEDs) as an electron transport material and emitting layer. The lowest singlet excited state (S1) of Alq3 has been studied by the singles configuration interaction (CIS) method and time-dependent density functional theory (TD-DFT) using a hybrid functional, B3-LYP, and the 3-21+G** basis set. For comparison ... Electron Configurations. The content that follows is the substance of General Chemistry Lecture 26. Electron configurations are the summary of where the electrons are around a nucleus. As we learned earlier, each neutral atom has a number of electrons equal to its number of protons.
Excited State Electron Configurations: So far we have only been talking about ground state electron configurations, when all of the electrons are in their most stable, lowest energy configurations. You know that electrons can also jump to an excited state if energy is added to them.