4.7 Article

Solely 3-Coordinated Organic-Inorganic Hybrid Copper(I) Halide: Hexagonal Channel Structure, Turn-On Response to Mechanical Force, Moisture, and Amine

Journal

INORGANIC CHEMISTRY
Volume 61, Issue 21, Pages 8320-8327

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.2c00781

Keywords

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Funding

  1. National Natural Science Foundation of China [22175015, 21704002, 21873005]
  2. Beijing Natural Science Foundation [2182054]
  3. Big Science Project from BUCT [XK180301]
  4. Fundamental Research Funds for the Central Universities

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In this study, we report a novel organic-inorganic hybrid CuIhalide PyCs3Cu2Br6, which exhibits turn-on response to external stimuli. This hybrid material possesses a triangular planar structure and a hexagonal channel structure, undergoing phase change and showing high emission upon mechanical force, heat, moisture, and amine vapor stimuli.
Herein, we report a novel organic-inorganic hybrid CuIhalide PyCs3Cu2Br6(Py: pyridinium), where pyridinium andcesium ions coexist. We successfully develop a novel strategy forfabricating turn-on responsive materials. PyCs3Cu2Br6has a highersingle-crystal symmetry (no. 191) than its all-inorganic counterpartCs3Cu2Br5(no. 62), and the incorporation of organic pyridiniumvaried the coordination environment of CuI. PyCs3Cu2Br6formeda triangle planar structure with solely 3-coordinated CuIions,which quenched its luminescence. However, PyCs3Cu2Br6presented a hexagonal channel structure, which enabled it withturn-on response upon mechanical force, heat, moisture, and aminevapor. Such structure offered channels for active molecules todiffuse and interact with pyridiniums, leading to the stimuli-triggered phase change to highly emissive Cs3Cu2Br5. To our bestknowledge, for thefirst time, we discover a novel 3-coordinated organic-inorganic hybrid CuIhalide with turn-on response toexternal stimuli. We believe that our study will contribute to expanding the landscape of smart stimulus-responsive materials and lay the foundation for their wide applications

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