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<p>When a ceramic ionic-crystal nanocluster is group-substituted with polymer chain segments to form an ionomeric aggregate, is the ordered structure maintained within the sterically hindered nanocluster? We observed, for Na-salt sulfonated polystyrene ionomer, the electron-diffraction lattice fringes of the nanoclusters, which proved their internal crystalline ordering driven by electrostatic attractions overcoming steric hindrance. Kinetically, the nanoclusters’ enhanced melting endotherm upon aging indicate their quasi-, slow-ordering character. Extended tight binding molecular dynamics simulations provide an insight into the mechanism underlying the ionic-group aggregation during nanoclustering. We hence proposed an uncommon state of order, polymer-bound ceramic quasicrystal, supplementary to the order phenomena in crystalline ceramics.</p>

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Order Remains Interior to a Ceramic Ionic Nanocluster Sterically Hindered by Covalently Attached Polymer Segments

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • Leiyu Jia,
  • Junji Wu,
  • Zixin Yu,
  • Yuan Chen,
  • Yao Xu,
  • Jie Wang,
  • Zhen Hu,
  • Chuanqun Hu,
  • Dachuan Ding,
  • Bin Yang,
  • Tao Hu,
  • Xinghou Gong,
  • Juan Wang,
  • Jan-Michael Albina,
  • Chonggang Wu,
  • Masanori Hara

摘要

When a ceramic ionic-crystal nanocluster is group-substituted with polymer chain segments to form an ionomeric aggregate, is the ordered structure maintained within the sterically hindered nanocluster? We observed, for Na-salt sulfonated polystyrene ionomer, the electron-diffraction lattice fringes of the nanoclusters, which proved their internal crystalline ordering driven by electrostatic attractions overcoming steric hindrance. Kinetically, the nanoclusters’ enhanced melting endotherm upon aging indicate their quasi-, slow-ordering character. Extended tight binding molecular dynamics simulations provide an insight into the mechanism underlying the ionic-group aggregation during nanoclustering. We hence proposed an uncommon state of order, polymer-bound ceramic quasicrystal, supplementary to the order phenomena in crystalline ceramics.