Role of homogeneous solvents on photophysics of 3-pyrazolyl-2-pyrazoline derivative

3-Pyrazolyl-2-pyrazoline derivative (PZ) exhibits S0 → S1 and S0 → S2 electronic transitions similar to dimethylamino styryl substituted 2-pyrazoline. Solvent dependent radiative emissions and relaxation processes from S1 and S2 states in PZ have been resolved.