In PL spectrum for Jahn teller effect of octahedral metal complex, is there variation of same metal complex in a solid and liquid state studies? If it so, give me a reason.
PL spectra can change in solid state because in solid state, the complex has got lesser freedom for geometry change upon excitation as compared to solution. So the radiationless deactivation pathways upon geometry change can be reduced in solid state.
In solid state you have no solvation effects from the liquid. Thus you typically have a narrow emission spectrum and a small stokes shift. Once you put the same chromophore in water, you have typically a red shift of the emission due to solvation, as well as a broadening of the emission spectrum due to solvent fluctuations.