4.7 Article

Dielectric switching, SHG response and Pd(ii) adsorption of a multifunctional phase-transition complex

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INORGANIC CHEMISTRY FRONTIERS
卷 8, 期 22, 页码 4858-4863

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qi01017d

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  1. National Natural Science Foundation of China [21771037, 21805033]

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This study highlights the advantages of introducing functional groups into phase transition materials and presents a new approach to design multifunctional materials. The one-dimensional coordination polymer demonstrated reversible phase transition and adsorption of metal ions, showcasing potential applications in monitoring metal adsorption through measurements of SHG and dielectric switching.
A one-dimensional coordination polymer [(C2H4OH)C4H9NS]CdCl3 (1) with flexible N-(2-hydroxyethyl)thiomorpholinium cations coordinating to central metal Cd crystallized in a chiral space group P2(1)2(1)2(1) and showed a reversible phase transition at 174.4/162.8 K, which corresponded to the second harmonic generation (SHG) activity and dielectric switching. The introduction of a thioether group enables 1 to adsorb Pd(ii) metal ions and the SHG signal and dielectric switching disappeared after adsorption; hence, Pd(ii) adsorption can be monitored by the measurements of SHG and dielectric switching. This study emphasizes the advantages of introducing functional groups into the phase transition materials and presents a new approach to design multifunctional materials.

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