Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (11): 20250163.doi: 10.7503/cjcu20250163

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

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)

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

CLC Number: 

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