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<p>Understanding the fundamental properties of actinide-based materials is pivotal in unlocking new solutions for challenges in nuclear waste management. In this work, we showcase a novel thorium cluster (<b>Th-npc</b>) that exhibits an extremely rare Th–N bond capping the square antiprismatic Th<sup>4+</sup> metal center. Remarkably, <b>Th-npc</b> exhibits both photochromic and radiochromic behaviors under UV and X-ray radiation, respectively, allowing for distinct, measurable colorimetric shifts that facilitate a red-green-blue (RGB) radiation dosimetry method. The integration of <b>Th-npc</b> with a custom-built optoelectronic device enables on-site radiation dosimetry, offering the advantages of simple operation and rapid data acquisition. Additionally, this work pioneers the application of actinide materials in photothermal conversion, opening new avenues for the strategic utilization of thorium-based compounds.</p>

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Pioneering radiation dosimetry and photothermal conversion in a photochromic and radiochromic thorium cluster

  • 期刊论文

  • 发表日期：

    2025年2月7日

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  • Jingqi Ma,
  • Junpu Yang,
  • Huangjie Lu,
  • Tingrui Xu,
  • Huiliang Hou,
  • Raffaele Scalia,
  • Jian Lin

摘要

Understanding the fundamental properties of actinide-based materials is pivotal in unlocking new solutions for challenges in nuclear waste management. In this work, we showcase a novel thorium cluster (Th-npc) that exhibits an extremely rare Th–N bond capping the square antiprismatic Th4+ metal center. Remarkably, Th-npc exhibits both photochromic and radiochromic behaviors under UV and X-ray radiation, respectively, allowing for distinct, measurable colorimetric shifts that facilitate a red-green-blue (RGB) radiation dosimetry method. The integration of Th-npc with a custom-built optoelectronic device enables on-site radiation dosimetry, offering the advantages of simple operation and rapid data acquisition. Additionally, this work pioneers the application of actinide materials in photothermal conversion, opening new avenues for the strategic utilization of thorium-based compounds.