Synthesis, growth and characterization of 2,5 – dimethyl-N-(3-phenylprop-2-en-1-ylidene) aniline (2,5 DPPA) single crystal: A new second order nonlinear optical material for photonic and optoelectronic applications

•Systematic studies have resulted in the growth of good quality nonlinear optical material.•The NLO efficiency of the grown crystal is 1.25 times greater than that of KDP.•The grown crystals were investigated and reported for the first time.•The results indicate that 2, 5 DPPA could be expected to be a suitable material for the NLO applications.