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Versatile Superatom Complex Nanocluster for the Construction of Framework Materials.

Wenjun Du1,2, Lirong Jiang1, Shuang Chen1

  • 1Institutes of Physical Science and Information Technology and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Department of Chemistry, and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.

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|August 9, 2022
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Summary

Researchers synthesized a chiral superatom complex nanocluster, [Ag23(SAdm)12]3+, to create novel superatom complex inorganic framework (SCIF) and organic framework (SCOF) materials. The resulting frameworks exhibit diverse topologies and enhanced properties, particularly Ag23(SAdm)12(SbF6)3(dpbz)3, which shows superior surface area and luminescence.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Supramolecular Chemistry

Background:

  • Controlling the assembly of nanometer-sized building blocks is crucial for constructing functional framework materials.
  • Developing stable, versatile nanosized assembly modules with multiple coordination sites is a significant challenge.

Purpose of the Study:

  • To synthesize a chiral superatom complex nanocluster, [Ag23(SAdm)12]3+ (Ag-23), for assembling into diverse framework materials.
  • To construct and characterize superatom complex inorganic framework (SCIF) and superatom complex organic framework (SCOF) materials using the Ag-23 module.
  • To investigate the impact of assembly modes on the properties and functionalities of the resulting framework materials.

Main Methods:

  • Synthesis of the chiral superatom complex nanocluster [Ag23(SAdm)12]3+ using 1-adamantanethiol (SAdm).
  • Assembly of the nanocluster with inorganic (SbF6) and organic linkers (bpy, dpbz) to form SCIF and SCOF materials.
  • Structural characterization of the framework materials, including topology and superstructure analysis.
  • Evaluation of material properties such as specific surface area, photoluminescence, and electrochemiluminescence.

Main Results:

  • Successful synthesis of the [Ag23(SAdm)12]3+ nanocluster, serving as a versatile building block.
  • Construction of four framework materials: Ag-1 (SCIF), Ag-2 (SCIF), Ag-bpy (SCOF), and Ag-dpbz (SCOF).
  • Observation of diverse superstructures with interpenetrating frameworks and adamantane-like, hexagonal, and cubic topologies.
  • Ag-dpbz exhibited the largest specific surface area and strongest photoluminescence and electrochemiluminescence signals due to its dense network arrangement.

Conclusions:

  • The [Ag23(SAdm)12]3+ nanocluster is an effective module for constructing diverse SCIF and SCOF materials.
  • Assembly modes significantly influence the topology, superstructure, and properties of the resulting framework materials.
  • The Ag-dpbz framework demonstrates potential for applications requiring high surface area and strong luminescence/electroluminescence.