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Thirupugalmani, K., Karthick, S., Shanmugam, G., Kannan, V., Sridhar, B., Nehru, N. and Brahadeeswaran, S. (2017) Second- and Third-Order Nonlinear Optical and Quantum Chemical Studies on 2-Amino-4-picolinium-nitrophenplate-nitrophenol: A Phase Matchable Organic Single Crystal. Optical Materials, 49, 79-93.
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TITLE:
Synthesis and Controllable Growth Dynamics of Third Order Nonlinear Optical Material of 2-Amino-4-Methylpyridinium 2-Chloro 4-Nitro Benzoate Electro-Mechanical Investigation and Device Fabrication
AUTHORS:
Kuppan Venkatesan, Lakshmanan Jothi
KEYWORDS:
Crystal Growth, Single Crystal XRD Z-Scan Studies, Photoconductivity, Dielectric Measurements, Mechanical Studies
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.9 No.5,
August
26,
2021
ABSTRACT: An organic nonlinear optical material 2-Amino-4-methylpyridinium 2-chloro 4-nitro benzoate (AMPCNB) was synthesized and large size single crystals were grown by slow evaporation solution growth method. Single crystal X-ray diffraction study showed that the title compound belongs to monoclinic crystal system with P21/n space group. A powder XRD study was performed to ascertain its phase. The UV–VIS-NIR study was performed to investigate the transparency window and lower cutoff wavelength of the compound, no absorption has been observed between 318 and 1100 nm. The third harmonic efficiency of the title compound has been studied using the Z-scan technique using continuous-wave Nd:YAG laser to confirm its saturable absorption and self-defocusing effect. The photo conducting and charge transport properties are analyzed using photoconductivity and dielectric measurements. Theoretical calculation of molecular polarizability, which is helpful in device fabrication, was carried out from Penn gap, Clausius-Mosotti equations and the obtained results were compared. Mechanical properties of the grown crystal were investigated by Vicker’s microhardness study.