Materials synthesis, band gap energy, yield strength and frequency doubling properties of 4-Dimethylaminopyridine lithium chloride: A semiorganic nonlinear optical crystal

Add time:09/10/2019    Source:sciencedirect.com

Organic 4-Dimethylaminopyridine inorganic Lithium chloride (4-DMAPLC) has been taken in stoichiometric ratio and synthesized 4-dmethylaminopyridine lithium chloride crystal by slow evaporation solution growth technique using water as a solvent. Customizable size 4-DMAPLC crystals were harvested at room temperature. The obtained customizable crystal was subjected to various characterization processes. Powder XRD studies performed to identify the crystalline nature of the sample. Single crystal XRD studies establish the crystalline system of the sample which denoted that monoclinic system with cell parameter values a = 9.88 Å, b = 8.94 Å and c = 13.53 Å with volume V = 1191 Å3. Fourier transform infrared spectroscopy identifies the various modes of functional groups available in the sample. UV–Vis-NIR transmittance spectrum shows that the lower cut-off wavelength at 190 nm possesses material for nonlinear optical application. High dielectric constant values at low frequency region were identified from dielectric constant studies. Vickers micro hardness studies reveal the mechanical strength and behaviors of the crystal and calculated work hardening co-efficient to be n = 1.43305. Energy dispersive X-ray diffraction analysis (EDAX) carried out and confirms the synthesized chlorides of lithium, nitrogen and carbon of 4-Dmethylaminopyridine molecules in the grown sample. Second harmonic generation (SHG) efficiency of has grown 4-DMAPLC crystal were investigated using 1064 nm of Nd: YAG laser and the SHG efficiency were found to be 1.29 times greater than KDP.

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