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<p>The present work aims to focus on the synthesis, growth, and characterization of a slow-evaporation-grown 2-amino-6-methylpyridinium hemifumarate dihydrate. X-ray diffraction analysis confirmed the crystalline quality of the compound with lattice parameters of a = 9.7112(10) Å, b = 14.4343(12) Å, c = 7.4723(7) Å and volume = 1040 Å<sup>3</sup>. Verification of the presence of functional groups was achieved through FTIR and FT-Raman studies. The identification of carbon and hydrogen molecules was confirmed via NMR analysis. UV–vis–NIR spectral studies were employed to determine the optical transmittance range and cut-off wavelength. The luminescent properties of the 2AF crystal were explored, while the dielectric properties of the 2AF crystal were analyzed through dielectric studies. Thermal analysis indicated stability up to 104&#xa0;°C, with subsequent decomposition stages observed through differential thermal analysis (DTA). The crystal exhibited reverse saturable absorption (RSA) behavior, crucial for applications in optical limiting and laser protection. The microhardness analysis indicated that the crystal is classified as a soft material.</p>

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Development and physicochemical evaluation of 2-amino-6-methylpyridinium hemifumarate dihydrate for advanced optical limiting devices

  • 期刊论文

  • 发表日期：

    2026年4月27日

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  • G. Ahila,
  • M. Divya Bharathi,
  • M. Jayachandiran,
  • P. Vani,
  • P. Vijayakumar,
  • A. Raja,
  • Paavai. Era,
  • Mohd Afzal,
  • V. Viswanathan,
  • RO.MU. Jauhar

摘要

The present work aims to focus on the synthesis, growth, and characterization of a slow-evaporation-grown 2-amino-6-methylpyridinium hemifumarate dihydrate. X-ray diffraction analysis confirmed the crystalline quality of the compound with lattice parameters of a = 9.7112(10) Å, b = 14.4343(12) Å, c = 7.4723(7) Å and volume = 1040 Å3. Verification of the presence of functional groups was achieved through FTIR and FT-Raman studies. The identification of carbon and hydrogen molecules was confirmed via NMR analysis. UV–vis–NIR spectral studies were employed to determine the optical transmittance range and cut-off wavelength. The luminescent properties of the 2AF crystal were explored, while the dielectric properties of the 2AF crystal were analyzed through dielectric studies. Thermal analysis indicated stability up to 104 °C, with subsequent decomposition stages observed through differential thermal analysis (DTA). The crystal exhibited reverse saturable absorption (RSA) behavior, crucial for applications in optical limiting and laser protection. The microhardness analysis indicated that the crystal is classified as a soft material.