高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (11): 20250163.doi: 10.7503/cjcu20250163

• 研究论文: 无机化学 • 上一篇    下一篇

碘化亚铜簇基闪烁体的制备及X射线激发活性氧产生性能

肖康, 薛程文, 沈嘉成, 刘湘梅()   

  1. 南京邮电大学材料科学与工程学院, 南京 210023
  • 收稿日期:2025-06-11 出版日期:2025-11-10 发布日期:2025-08-14
  • 通讯作者: 刘湘梅 E-mail:iamxmliu@njupt.edu.cn
  • 基金资助:
    南京邮电大学校级自然科学基金(NY223120);江苏省大型科研仪器开放共享自主研究课题(TC2024A020)

Fabrication of Copper(I) Iodide Cluster-based Scintillator for Highly Efficient X-ray-excited Reactive Oxygen Species Generation

XIAO Kang, XUE Chengwen, SHEN Jiacheng, LIU Xiangmei()   

  1. School of Materials Science & Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China
  • Received:2025-06-11 Online:2025-11-10 Published:2025-08-14
  • Contact: LIU Xiangmei E-mail:iamxmliu@njupt.edu.cn
  • Supported by:
    the Natural Science Foundation of Nanjing University of Posts and Telecommunications, China(NY223120);the Jiangsu Independent Research Project on Opening and Sharing of Large-Scale Scientific Research Instruments, China(TC2024A020)

摘要:

碘化亚铜簇基配合物因其结构多样性、 强X射线吸收能力和可调激发态特性, 在闪烁体材料领域具有重要的应用前景. 然而, 现有高性能碘化亚铜配合物通常需获得其单晶才能实现高效发光, 且研磨会引发力致变色效应, 这严重限制了其在生物医学领域的应用. 本研究通过简便的溶液法获得基于Cu₄I₄Py₄的配合物闪烁体, 系统研究了晶体结构、 共晶溶剂分子及高分子基质对其发光性能的影响规律. 进一步采用聚苯乙烯(PS)作为包覆基质, 调控闪烁体的发光波长使其与光敏剂亚甲基蓝(MB)的光谱高度匹配以提高能量传递效率, 同时增强了材料的生物相容性和环境稳定性, 最终获得高稳定性的X射线激发光敏剂纳米粒子(Cu₄I₄Py₄-PS-MB). N,N-二甲基-4-亚硝基苯胺(RNO)脱色实验结果表明, 该纳米复合体系在紫外光和X射线激发下均展现出高效的产生单线态氧(¹O₂)的能力, 证实了其构建高效稳定的X射线光动力治疗(X-PDT)纳米平台的潜力, 为深层肿瘤光动力治疗提供了新的解决方案.

关键词: 碘化亚铜簇基配合物, X射线闪烁体, 深层肿瘤治疗, 光动力学治疗

Abstract:

Cuprous iodide cluster-based complexes exhibit significant potential in scintillator materials due to their structural diversity, strong X-ray absorption capacity and tunable excited-state properties. However, crystalline state is typically required to achieve efficient luminescence, and mechanical grinding often induces mechanochromic effects, which severely limit their biomedical applications. In this study, a series of Cu4I4Py4 complex-based scintillators was prepared via a facile solution processing method. The effects of crystal structure, co-crystallized solvent molecule, and polymer matrix on their luminescent performance were systematically investigated. In addition, polystyrene(PS) was employed as an encapsulation matrix to modulate the emission wavelength of the scintillators, enabling spectral overlap with the photosensitizer(methylene blue, MB) for enhanced energy transfer efficiency. The encapsulation simultaneously improved biocompatibility and bioenvironmental stability of the scintillation complex, yielding a type of photosensitizer nanoparticles(Cu4I4Py4-PS-MB) with high X-ray irradiation resistance. The results of NN-dimethyl-4-nitrosoacniline(RNO) bleaching(RNO-imidazole) experiments confirmed that this nanocomposite system exhibits exceptionally high singlet oxygen(1O2) yields under both UV light and X-ray irradiation, demonstrating its potential for constructing efficient and stable X-ray photodynamic therapy(X-PDT) nanoplatform. This work provides a novel solution for deep-tumor photodynamic therapy by overcoming the limitations of traditional scintillator materials.

Key words: Cuprous iodide cluster complex, X-ray scintillator, Deep tumor therapy, Photodynamic therapy

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