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Area of Science:

  • Nanotechnology
  • Materials Science
  • Inorganic Chemistry

Background:

  • Silver thiolates are known for their unique structural and optical properties.
  • Controlling the assembly of silver nanostructures remains a challenge.

Purpose of the Study:

  • To synthesize and characterize novel silver thiolate/phenylphosphonic acid (H2 PPA) nanoclusters.
  • To investigate the influence of H2 PPA on the structure and properties of silver nanoclusters.
  • To explore the optical and luminescent behavior of these nanoclusters.

Main Methods:

  • Synthesis of silver thiolate/PPA nests using Ag/tBuSH assembly system with H2 PPA.
  • Structural characterization of the resulting nanoclusters (SD/Ag45a, SD/Ag66a, SD/Ag73a).
  • Analysis of solution behavior, optical absorption, and luminescence properties.

Main Results:

  • Formation of nanoscale, high-atom number silver nests with core-shell architectures.
  • SD/Ag45a (45-atom ellipsoid), SD/Ag66a (64-atom rod-in-shell), and SD/Ag73a (73-atom multi-shell) were synthesized.
  • SD/Ag45a and SD/Ag73a exhibit near-infrared emission and distinct thermochromic luminescence.

Conclusions:

  • Phenylphosphonic acid plays a crucial role in directing the formation of complex silver thiolate nanostructures.
  • This work provides a rational approach for fabricating and modifying silver nanoclusters.
  • The synthesized nanoclusters show potential for applications in optical and sensing technologies.