Synthesis, optical and nonlinear optical properties of new pyrazoline derivatives

•Pyrazoline derivatives exhibit efficient broadband photoluminescence.•Hybrid systems based on pyrazoline can be used for lasing applications.•Presented molecules are good two-photon absorbers.

We report on synthesis and optical properties of new organic compounds based on substituted pyrazole ring. The investigated pyrazoline derivatives (PRDs) exhibit efficient broadband photoluminescence which covers nearly whole visible spectrum. The experimental results are compared to quantum chemical calculations. Amplified spontaneous emission and photodegradation measurements were performed for hybrid systems based on selected PRDs doped into poly(methyl methacrylate) matrix proving the potential utility of such systems in lasing applications. Two-photon absorption (TPA) properties were characterized by the femtosecond Z-scan technique.