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<p>A bulk-size semiorganic single crystal of triaqua-(4-nitrophenolato)-lithium (NPLi·3H<sub>2</sub>O) was harvested using the slow evaporation solution technique (SEST) under ambient conditions. Good quality NPLi·3H<sub>2</sub>O crystal was analyzed using various instrumentation techniques to assess its suitability for different applications. Its crystallographic structure and unit cell dimensions were evaluated through powder X-ray diffraction (PXRD) and single crystal XRD, confirming that it crystallizes in a&#xa0;monoclinic structure with a&#xa0;non-centrosymmetric nature (P<sub>c</sub>). The optical properties of NPLi·3H<sub>2</sub>O crystal were analyzed using photoluminescence (PL) and UV–Vis spectroscopy. Thermal stability evaluation was conducted by thermogravimetric analysis (TGA) and the activation energy was calculated based on TGA data. Mechanical stability was evaluated using the Vickers microhardness method, revealing a&#xa0;reverse indentation size effect explained by various theoretical models. The third-order nonlinear optical (NLO) characteristics were investigated using the Z-scan technique, and its nonlinear absorption coefficient (NLA) was&#xa0;determined from open-aperture data. The nonlinear analysis suggests that the NPLi·3H<sub>2</sub>O crystal could be an excellent candidate for optical limiting applications.</p>

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Exploring the thermal, mechanical, optical and nonlinear characteristics of triaqua-(4-nitrophenolato)-lithium: a potential semiorganic single crystal for nonlinear optical applications

  • 期刊论文

  • 发表日期：

    2025年5月24日

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  • Jyoti,
  • N. Vijayan,
  • Kiran,
  • Divyansh Joshi,
  • Chetan,
  • Sanyam Jain,
  • Geetanjali Sehgal,
  • B. Sridhar

摘要

A bulk-size semiorganic single crystal of triaqua-(4-nitrophenolato)-lithium (NPLi·3H2O) was harvested using the slow evaporation solution technique (SEST) under ambient conditions. Good quality NPLi·3H2O crystal was analyzed using various instrumentation techniques to assess its suitability for different applications. Its crystallographic structure and unit cell dimensions were evaluated through powder X-ray diffraction (PXRD) and single crystal XRD, confirming that it crystallizes in a monoclinic structure with a non-centrosymmetric nature (Pc). The optical properties of NPLi·3H2O crystal were analyzed using photoluminescence (PL) and UV–Vis spectroscopy. Thermal stability evaluation was conducted by thermogravimetric analysis (TGA) and the activation energy was calculated based on TGA data. Mechanical stability was evaluated using the Vickers microhardness method, revealing a reverse indentation size effect explained by various theoretical models. The third-order nonlinear optical (NLO) characteristics were investigated using the Z-scan technique, and its nonlinear absorption coefficient (NLA) was determined from open-aperture data. The nonlinear analysis suggests that the NPLi·3H2O crystal could be an excellent candidate for optical limiting applications.