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The Synthesis and Property Study of NH-Ac-Anchored Multilayer 3D Polymers.

My Phan1, Hao Liu1, Lina M Delgado1

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|May 14, 2025
PubMed
Summary

Novel multilayer 3D polymers with 1,3-phenyl bridges were synthesized and characterized. These thermally stable polymers exhibit strong electronic delocalization and potential for advanced applications.

Keywords:
Suzuki–Miyaura cross-couplingaggregation-induced emission (AIE)gel permeation chromatography (GPC)multilayer 3D polymerstransition metal catalysis

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Area of Science:

  • Materials Science
  • Polymer Chemistry

Background:

  • Development of novel polymers with enhanced thermal and electronic properties is crucial for advanced applications.
  • Multilayer 3D polymers offer unique structural and functional characteristics.

Purpose of the Study:

  • To synthesize and characterize four novel multilayer 3D polymers (1A to 1D) with 1,3-phenyl bridge architectures.
  • To analyze the structural, thermal, optical, and morphological properties of these new polymer materials.

Main Methods:

  • Catalytic Suzuki-Miyaura cross-coupling for polymer synthesis.
  • Fourier transform-infrared (FT-IR) spectroscopy for hydrogen bonding analysis.
  • UV-vis spectroscopy for electronic delocalization studies.
  • Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) for thermal stability.
  • X-ray diffraction (XRD), aggregation-induced emission (AIE), and scanning electron microscopy (SEM) for structural and morphological insights.

Main Results:

  • Successful synthesis of high-molecular-weight multilayer 3D polymers (248-320 layers).
  • Demonstrated strong electronic delocalization (UV-vis peaks at 257-280 nm) and good thermal stability ( >20% mass retained at 1000 °C).
  • Polymer 1A showed a glass transition temperature (Tg) of 167 °C, indicating network formation and potential crystallinity.

Conclusions:

  • The synthesized polymers possess excellent thermal stability and electronic delocalization.
  • The study confirms the potential of these novel 3D polymers for biomedical and industrial applications.
  • The combination of aromatic conjugation and hydrogen bonding contributes to the observed polymer properties.