Question

Why pi to pi sar transistion has excited tate more polar?

Answer 1

This is because the lone pair interacts with the solvent, especially a polar one, such that the solvent aligns itself with the ground state. ... This causes a lowering of energy of the ground state and not the excited state. Because of this, the energy of the transition increases, hence the "blue shift".

Answer 2

hei, :)

This is because

the lone pair interacts with the solvent, especially a polar one, such that the solvent aligns itself with the ground state. ... This causes a lowering of energy of the ground state and not the excited state. Because of this, the energy of the transition increases, hence the "blue shift".