A highly efficient yet stable salamo-type fluorescent chemosensor with multiple responses to Cu<sup>2+</sup>and S<sup>2−</sup>

Yao, Guang-Xu; Wang, Li; Liu, Hui; Dong, Wen‐Kui

doi:10.1039/d1nj02763h

New J. Chem.

2021

DOI: 10.1039/d1nj02763h

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A highly efficient yet stable salamo-type fluorescent chemosensor with multiple responses to Cu²⁺and S²⁻

Guang-Xu Yao

Li Wang

Hui Liu

et al.

Abstract: A new salamo-type bisoxime compound H3L has been synthesized and exploited as a highly efficient chemosensor for multiple responses to Cu2+ and S2-. Chemosensor H3L exhibits highly selective and sensitive...

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Cited by 7 publications

References 67 publications

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Cu₃₄S₆(PFBT)₂₂(PPh₃)₆: A Cu₁₂S₆ Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

Li,

Qi,

Zhang

et al. 2024

Adv Funct Materials

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Atomically precise copper nanoclusters with crystallization‐induced emission enhancement (CIEE) have garnered significant academic interests‐ but the rational design of high‐nuclearity Cu nanoaggregates with precise atomic structures and the CIEE effect remains a long‐standing challenge. Herein, a new atomically precise copper nanocluster co‐protected by thiolate, phosphine, and S2− ligands, formulated as Cu34S6(PFBT)22(PPh3)6 (Cu34, PFBT = pentafluorobenzenethiol, PPh3 = triphenylphosphine), is reported, which possesses a typical Cu12S6 core and a Cu22S22P6 shell. Under photoexcitation at 505 nm, Cu34 exhibits strong red‐light emission with a photoluminescence quantum yield of 4.1%. DFT calculations confirm that the emission stems from the ligand‐to‐metal charge transfer (LMCT) transition. This nanoaggregate shows a strong CIEE effect, with the crystalline form exhibiting an 800‐fold enhancement in emission intensity compared to its solution form. An in‐depth structural investigation of the ligand shell reveals that the extensive C−H···F, C−H···π, and π···π interactions significantly restrict the intra‐ and inter‐molecular rotations and vibrations, accounting for the CIEE phenomena. The red emission of Cu34 can be selectively quenched by CH3CN, with a lower detection limit of 9.36 µM (0.38 ppm). This study advances the development of high‐nuclearity copper nanocluster with the CIEE effect and holds significant potential for applications in selectively sensing volatile organic compounds (VOCs).

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Cu₃₄S₆(PFBT)₂₂(PPh₃)₆: A Cu₁₂S₆ Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

Li,

Qi,

Zhang

et al. 2024

Adv Funct Materials

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A unitary fluorescence probe to sense Co2+: Validated by theoretical studies and X-ray crystallography

Yao

Liu

Wang

et al. 2022

Inorganica Chimica Acta

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Solvent-driven self-assembly of two novel di- and tetra-nuclear Cu(II) bis(salamo)-based complexes

Zhang

Wei²,

Niu³

et al. 2023

Journal of Molecular Structure

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A highly efficient yet stable salamo-type fluorescent chemosensor with multiple responses to Cu²⁺and S²⁻

Abstract: A new salamo-type bisoxime compound H3L has been synthesized and exploited as a highly efficient chemosensor for multiple responses to Cu2+ and S2-. Chemosensor H3L exhibits highly selective and sensitive...

Cited by 7 publications

References 67 publications

Cu₃₄S₆(PFBT)₂₂(PPh₃)₆: A Cu₁₂S₆ Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

Cu₃₄S₆(PFBT)₂₂(PPh₃)₆: A Cu₁₂S₆ Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

A unitary fluorescence probe to sense Co2+: Validated by theoretical studies and X-ray crystallography

Solvent-driven self-assembly of two novel di- and tetra-nuclear Cu(II) bis(salamo)-based complexes

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A highly efficient yet stable salamo-type fluorescent chemosensor with multiple responses to Cu2+and S2−

Abstract: A new salamo-type bisoxime compound H3L has been synthesized and exploited as a highly efficient chemosensor for multiple responses to Cu2+ and S2-. Chemosensor H3L exhibits highly selective and sensitive...

Cited by 7 publications

References 67 publications

Cu34S6(PFBT)22(PPh3)6: A Cu12S6 Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

Cu34S6(PFBT)22(PPh3)6: A Cu12S6 Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

A unitary fluorescence probe to sense Co2+: Validated by theoretical studies and X-ray crystallography

Solvent-driven self-assembly of two novel di- and tetra-nuclear Cu(II) bis(salamo)-based complexes

Contact Info

Product

Resources

About

A highly efficient yet stable salamo-type fluorescent chemosensor with multiple responses to Cu²⁺and S²⁻

Cu₃₄S₆(PFBT)₂₂(PPh₃)₆: A Cu₁₂S₆ Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing

Cu₃₄S₆(PFBT)₂₂(PPh₃)₆: A Cu₁₂S₆ Core‐Based Nanocluster with Long‐Lived Phosphorescent Crystallization‐Induced Emission Enhancement for Selectively Acetonitrile Sensing