Synthesis, Growth, Structural and Optical properties of Dimethyl amino pyridinium 4-nitrophenolate 4-nitrophenol single crystals

Epochal advances have been accounted recently in the field of non-linear optics in the area of material engineering and optoelectronic device technology. Theoretical considerations of molecular hyperpolarizability (β) of the donor-acceptor substituted aromatic molecules show that the transfer of a proton from the electron-donor group of an acid to the electron acceptor group of a base could increase β for both resulting ionic species relative to the corresponding neutral molecules. To take the advantage of this, the cocrystallization of organic acid with organic base was studied. Dimethyl amino pyridinium 4-nitrophenolate 4-nitrophenol salt was synthesized by dissolving dimethyl amino pyridine in 4-nitrophenol with the molar ratio 1:2 using acetone as solvent. Single crystals of DMAPNP were grown by slow evaporation. The structural properties were studied by X-ray diffraction analysis and Fourier Transform Infrared (FTIR) Spectroscopy and its optical studies were analyzed by UV-V is spectral analysis. Mechanical studies were taken by Vickers test.