Spectroscopic investigation, photophysical parameters and DFT calculations of 4,4′-(1E,1′E)-2,2′-(pyrazine-2,5-diyl)bis(ethene-2,1-diyl)bis(N,N-dimethylaniline) (PENDA) in different solvents

The graphical presentation of the highest occupied and lowest unoccupied molecular orbitals of title compound at B3LYP/6-31G∗ level of theory.