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Ligand-Engineered All-In-One Cu(I) Iodide Complex Enables Near-Unity Photoluminescence and Advanced 3D X-ray Image Reconstruction

Liang, Mingli LU ; Gang, Kun ; Li, Le ; Liu, Kun ; Yan, Dong ; Wang, Sasa ; Liu, Shujuan ; Liu, Xiangmei ; Zhao, Qiang and Zheng, Kaibo LU (2025) In Angewandte Chemie - International Edition 64(43).
Abstract

High-performance X-ray detectors are essential for 3D X-ray imaging in computed tomography (CT), but conventional systems require high radiation doses to achieve fine resolution. All-In-One (AIO) Cu(I) halide complexes, capable of forming both ionic and coordinate bonds within a single structure, offer efficient scintillation at lower doses, yet their performance remains limited by nonradiative energy losses during indirect X-ray-to-light conversion. Here, we develop rigid-cation-assisted AIO Cu(I) halide complexes by introducing π–π interactions to suppress the nonradiative pathways, achieving near-unity photoluminescence quantum yield (PLQY). In particular, the rigid (benzyl-DABCO)2Cu5I7... (More)

High-performance X-ray detectors are essential for 3D X-ray imaging in computed tomography (CT), but conventional systems require high radiation doses to achieve fine resolution. All-In-One (AIO) Cu(I) halide complexes, capable of forming both ionic and coordinate bonds within a single structure, offer efficient scintillation at lower doses, yet their performance remains limited by nonradiative energy losses during indirect X-ray-to-light conversion. Here, we develop rigid-cation-assisted AIO Cu(I) halide complexes by introducing π–π interactions to suppress the nonradiative pathways, achieving near-unity photoluminescence quantum yield (PLQY). In particular, the rigid (benzyl-DABCO)2Cu5I7 (Bz-Cu5I7) complex stabilizes triplet emissive states, thereby facilitating high-efficiency radiative recombination and excellent radioluminescence (RL) properties. When incorporated into flexible scintillator film, Bz-Cu5I7 demonstrates remarkable X-ray imaging performance, enabling a high spatial resolution exceeding 20 lp mm−1 and a low radiation dose of 71.2 nGyair s−1. Importantly, 3D X-ray image reconstruction of small electronic components reveals fine structural details, highlighting the potential of Bz-Cu5I7 as a next-generation X-ray scintillator for low-dose CT imaging.

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; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
3D X-ray image reconstruction, Cu(I) halide complexes, Ligand engineering, Scintillator, X-ray imaging
in
Angewandte Chemie - International Edition
volume
64
issue
43
article number
e202512471
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:105014630605
  • pmid:40884039
ISSN
1433-7851
DOI
10.1002/anie.202512471
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 Wiley-VCH GmbH.
id
50c0feaa-1a69-453b-b2cc-fc7461fe4d1a
date added to LUP
2026-01-12 16:31:44
date last changed
2026-01-13 14:04:41
@article{50c0feaa-1a69-453b-b2cc-fc7461fe4d1a,
  abstract     = {{<p>High-performance X-ray detectors are essential for 3D X-ray imaging in computed tomography (CT), but conventional systems require high radiation doses to achieve fine resolution. All-In-One (AIO) Cu(I) halide complexes, capable of forming both ionic and coordinate bonds within a single structure, offer efficient scintillation at lower doses, yet their performance remains limited by nonradiative energy losses during indirect X-ray-to-light conversion. Here, we develop rigid-cation-assisted AIO Cu(I) halide complexes by introducing π–π interactions to suppress the nonradiative pathways, achieving near-unity photoluminescence quantum yield (PLQY). In particular, the rigid (benzyl-DABCO)<sub>2</sub>Cu<sub>5</sub>I<sub>7</sub> (Bz-Cu<sub>5</sub>I<sub>7</sub>) complex stabilizes triplet emissive states, thereby facilitating high-efficiency radiative recombination and excellent radioluminescence (RL) properties. When incorporated into flexible scintillator film, Bz-Cu<sub>5</sub>I<sub>7</sub> demonstrates remarkable X-ray imaging performance, enabling a high spatial resolution exceeding 20 lp mm<sup>−1</sup> and a low radiation dose of 71.2 nGy<sub>air</sub> s<sup>−1</sup>. Importantly, 3D X-ray image reconstruction of small electronic components reveals fine structural details, highlighting the potential of Bz-Cu<sub>5</sub>I<sub>7</sub> as a next-generation X-ray scintillator for low-dose CT imaging.</p>}},
  author       = {{Liang, Mingli and Gang, Kun and Li, Le and Liu, Kun and Yan, Dong and Wang, Sasa and Liu, Shujuan and Liu, Xiangmei and Zhao, Qiang and Zheng, Kaibo}},
  issn         = {{1433-7851}},
  keywords     = {{3D X-ray image reconstruction; Cu(I) halide complexes; Ligand engineering; Scintillator; X-ray imaging}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{43}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Angewandte Chemie - International Edition}},
  title        = {{Ligand-Engineered All-In-One Cu(I) Iodide Complex Enables Near-Unity Photoluminescence and Advanced 3D X-ray Image Reconstruction}},
  url          = {{http://dx.doi.org/10.1002/anie.202512471}},
  doi          = {{10.1002/anie.202512471}},
  volume       = {{64}},
  year         = {{2025}},
}