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Crystal Sponge Behavior in a Two-Dimensional Rare-Earth Hybrid Coordinate Polymer.

Ze-Jiang Xu1, Na Wang1, Wang Luo1

  • 1Chaotic Matter Science Research Center, Department of Materials, Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China.

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This summary is machine-generated.

Researchers developed a novel 2D rare-earth coordination polymer exhibiting reversible crystal transformations and significant changes in quantum efficiency and dielectric properties, showcasing crystal sponge behavior.

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Area of Science:

  • Materials Science
  • Chemistry
  • Crystallography

Background:

  • Stimuli-responsive multifunctional materials (SRMMs) offer dynamic responses to external stimuli.
  • Achieving simultaneous solvent-induced single-crystal to single-crystal (SCSC) transformation and post-desolvation structural phase transition remains a challenge.

Purpose of the Study:

  • To design and synthesize a novel 2D rare-earth organic-inorganic hybrid coordination polymer.
  • To investigate its stimuli-responsive properties, including SCSC transformation, quantum efficiency changes, and dielectric switching.

Main Methods:

  • Synthesis of a 2D rare-earth organic-inorganic hybrid coordination polymer.
  • Crystallographic analysis to confirm SCSC transformation.
  • Photoluminescence spectroscopy to measure quantum efficiency.
  • Dielectric measurements to assess phase transitions.

Main Results:

  • A reversible SCSC transformation was observed in the rare-earth polymer upon solvent stimuli.
  • The transformation led to significant changes in quantum efficiency (33.68% to 20.07%).
  • An isomorphic structural phase transition with dielectric switching and reversible layer distance changes (crystal sponge behavior) was demonstrated.

Conclusions:

  • The developed 2D rare-earth coordination polymer exhibits multifunctional responsive behavior.
  • This study highlights the potential of such materials for designing novel SRMMs.
  • Opens new avenues for exploring advanced responsive materials with tunable properties.