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<p>A non-centrosymmetric organic Schiff base crystal was synthesized via slow evaporation approach using substituted aniline and 2-hydroxy-1-naphthaldehyde. Single Crystal x-ray Diffraction Analysis, Fourier Transform Infrared Spectroscopy, UV–Visible Spectroscopy, <sup>1</sup>H-NMR Spectroscopy, and <sup>13</sup>C-NMR Spectroscopy have all been used to characterize it. The crystal space group is explained through single crystal x-ray diffraction analysis. The green&#xa0;color&#xa0;emission is&#xa0;observed for&#xa0;E4BMN in&#xa0;emission spectrum. Thermal analysis (TG–DTA) was used to determine the crystal’s&#xa0;thermal behavior. Surface morphology of the compound as seen through a scanning electron microscope (SEM). Using a Nd: YAG laser, an open-aperture method of Z-scan analysis was employed to compute NLO absorption of third-order nonlinear optical properties. Nd: YAG laser (532&#xa0;nm, 10&#xa0;Hz, 9&#xa0;ns) with a lowered onset limiting threshold could find a suitable choice for constructing laser security measures in the nanosecond green stimulation region. The optical limiting of the prepared organic crystal was very good and it is used for optoelectronics application. SHG analysis employed for the non-linear optical activity measurement of compounds. The efficiency of crystal has significantly improved in the Second Harmonic Generation (SHG).</p>

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An experimental investigation on spectroscopic and nonlinear optical properties of noncentrosymmetric organic crystal derived for optoelectronics from 2-hydroxy-1-napthaldehyde

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • M. Neela,
  • B. Premalatha,
  • P. Punitha,
  • T. C. Sabari Girisun

摘要

A non-centrosymmetric organic Schiff base crystal was synthesized via slow evaporation approach using substituted aniline and 2-hydroxy-1-naphthaldehyde. Single Crystal x-ray Diffraction Analysis, Fourier Transform Infrared Spectroscopy, UV–Visible Spectroscopy, 1H-NMR Spectroscopy, and 13C-NMR Spectroscopy have all been used to characterize it. The crystal space group is explained through single crystal x-ray diffraction analysis. The green color emission is observed for E4BMN in emission spectrum. Thermal analysis (TG–DTA) was used to determine the crystal’s thermal behavior. Surface morphology of the compound as seen through a scanning electron microscope (SEM). Using a Nd: YAG laser, an open-aperture method of Z-scan analysis was employed to compute NLO absorption of third-order nonlinear optical properties. Nd: YAG laser (532 nm, 10 Hz, 9 ns) with a lowered onset limiting threshold could find a suitable choice for constructing laser security measures in the nanosecond green stimulation region. The optical limiting of the prepared organic crystal was very good and it is used for optoelectronics application. SHG analysis employed for the non-linear optical activity measurement of compounds. The efficiency of crystal has significantly improved in the Second Harmonic Generation (SHG).