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<p>A novel 1:1 solvate single crystal of urea with N, N-dimethylacetamide (DMA) was successfully synthesized utilizing a controlled slow evaporation method. X-ray diffraction examination of a single crystal verified the development of a distinct monoclinic crystal structure with space group C2/c. FTIR spectroscopy verified the presence of characteristic urea and DMA functional groups, with distinct shifts indicating specific intermolecular interactions. Optical transparency studies, conducted via UV–Vis spectroscopy, demonstrated a broad transmission window, indicating suitability for photonic applications. The linear optical energy bandgap was found to be 3.32&#xa0;eV, using Tauc’s plot. The crystal’s mechanical robustness was evaluated through Vickers microhardness measurements, which showed a load-dependent hardness profile consistent with its anisotropic bonding nature. Laser damage threshold (LDT) testing indicated a high resistance to optical breakdown, underscoring its applicability in high-power laser systems. The specific heat capacity was determined through calorimetric analysis, revealing information about the material’s capacity for energy storage and thermal stability. NLO (Nonlinear optical) behavior was carried out utilizing the Z-scan technique, which confirmed a significant third-order nonlinear susceptibility, making the crystal a promising candidate for NLO (Nonlinear Optical) modulation. The combined assessments of thermal, structural, dielectric, optical, and nonlinear optical properties establish the UDMA solvate as a multifunctional material suitable for advanced photonic and optoelectronic technologies.</p>

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Synthesis and comprehensive property evaluation of urea–N,N-dimethylacetamide solvate single crystal

  • 期刊论文

  • 发表日期：

    2026年4月7日

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  • M. A. Gomathi,
  • P. Vinothkumar,
  • T. Sivakumar,
  • R. Ranjani,
  • A. Paul Dhinakaran,
  • T. Sivanesan

摘要

A novel 1:1 solvate single crystal of urea with N, N-dimethylacetamide (DMA) was successfully synthesized utilizing a controlled slow evaporation method. X-ray diffraction examination of a single crystal verified the development of a distinct monoclinic crystal structure with space group C2/c. FTIR spectroscopy verified the presence of characteristic urea and DMA functional groups, with distinct shifts indicating specific intermolecular interactions. Optical transparency studies, conducted via UV–Vis spectroscopy, demonstrated a broad transmission window, indicating suitability for photonic applications. The linear optical energy bandgap was found to be 3.32 eV, using Tauc’s plot. The crystal’s mechanical robustness was evaluated through Vickers microhardness measurements, which showed a load-dependent hardness profile consistent with its anisotropic bonding nature. Laser damage threshold (LDT) testing indicated a high resistance to optical breakdown, underscoring its applicability in high-power laser systems. The specific heat capacity was determined through calorimetric analysis, revealing information about the material’s capacity for energy storage and thermal stability. NLO (Nonlinear optical) behavior was carried out utilizing the Z-scan technique, which confirmed a significant third-order nonlinear susceptibility, making the crystal a promising candidate for NLO (Nonlinear Optical) modulation. The combined assessments of thermal, structural, dielectric, optical, and nonlinear optical properties establish the UDMA solvate as a multifunctional material suitable for advanced photonic and optoelectronic technologies.