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An atomically precise all-tert-butylethynide-protected Ag51 superatom nanocluster with color tunability
Guang-Xiong Duan1, Lin Tian, Jun-Bo Wen
1State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P.R. China. xieyp@hust.edu.cn lux@hust.edu.cn.
Nanoscale
|October 5, 2018
Summary
Researchers synthesized a novel silver superatom nanocluster, Ag51, protected by tert-butylethynide ligands. This nanocluster exhibits tunable blue-to-red emissions dependent on solvent polarity, showcasing a significant solvatochromic effect.
Area of Science:
- Nanomaterials Science
- Inorganic Chemistry
- Supramolecular Chemistry
Background:
- Silver nanoclusters are promising for optical applications.
- Ligand protection is crucial for stabilizing nanoclusters and tuning their properties.
- Atomically precise nanoclusters offer unique electronic and optical characteristics.
Purpose of the Study:
- To synthesize and characterize a novel atomically precise silver superatom nanocluster.
- To investigate the structural features of the synthesized nanocluster.
- To explore the optical properties and solvent-dependent behavior of the nanocluster.
Main Methods:
- Synthesis of the silver superatom nanocluster using tert-butylethynide ligands.
- Characterization using high-resolution electrospray ionization mass spectrometry (ESI-MS) and elemental analysis.
- Structural determination via single-crystal X-ray diffraction analysis.
Main Results:
- Successful construction of the Ag51(tBuC≡C)32 nanocluster.
- Elucidation of a unique three-shell structure: Ag@Ag8/Ag6@Ag36@C24/C8.
- Observation of a strong solvatochromic effect with emissions tunable from blue to red across different solvent polarities.
Conclusions:
- The tert-butylethynide ligand enables the formation of stable, atomically precise silver superatom nanoclusters.
- The Ag51 nanocluster possesses a well-defined multi-shell structure.
- The tunable emission properties make Ag51 a promising candidate for applications sensitive to solvent polarity.
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