Synthesis of the organic nonlinear optical compound N-benzyl-2-methyl-4-nitroaniline (BNA) was carried out in a newer chemical environment using the mixture of benzyl chloride and 2-methl-4-nitroaniline by a preferred laboratory synthesis process. The synthesized BNA compound was separated by column chromatography (CC) with low pressure silica gell using petrollium benzine and purity of the separated resultant product was confirmed by thin layer chromatography (TLC). Further, the material was recrystallized atleast four times in methanol and the highly purified BNA was used for the growth of single crystals from solutions with selected solvents by slow evaporation method at room temperature. Single crystals having natural growth morphology were harvested and their different growth faces were identified by optical goniometry. The grown crystals were subjected to different characterization techniques such as powder x-ray diffraction (PXRD), fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and UV–vis–Near IR spectroscopy. Further, the second harmonic generation (SHG) efficiency of the grown BNA crystal was studied by Kurtz and Perry powder technique using Nd:YAG laser as fundamental source and found to be twice that of inorganic standard KDP.

通过优选的实验室合成方法，在较新的化学环境中，使用苄基氯和2-甲基-4-硝基苯胺的混合物，合成有机非线性光学化合物N-苄基-2-甲基-4-硝基苯胺（BNA）。所合成的BNA化合物通过使用石油醚的低压硅胶通过柱色谱法（CC）分离，并通过薄层色谱法（TLC）确认分离出的所得产物的纯度。进一步地，该材料在甲醇中至少重结晶四次，并且高度纯化的BNA通过室温下的缓慢蒸发法，用于从具有选定溶剂的溶液中生长单晶。收获具有自然生长形态的单晶，并通过光学测角法鉴定其不同的生长面。生长的晶体经过了不同的表征技术，例如粉末X射线衍射（PXRD），傅立叶变换红外光谱（FTIR），差示扫描量热法（DSC）和紫外可见近红外光谱。此外，使用Nd：YAG激光作为基本光源，通过Kurtz和Perry粉末技术研究了生长的BNA晶体的二次谐波产生（SHG）效率，发现其是无机标准KDP的两倍。