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Metal-Ligand Bonds02:51

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The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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New protective ligands for atomically precise silver nanoclusters.

Geng-Geng Luo1, Qi-Lin Guo, Zhi Wang

  • 1Key Laboratory of Environmental Friendly Function Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, P. R. China. ggluo@hqu.edu.cn.

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|April 4, 2020
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Summary
This summary is machine-generated.

New protecting ligands are revolutionizing atomically precise silver nanoclusters (NCs). These novel agents, including nitrogen-donors and metalloligands, stabilize silver NCs, enabling exploration of new structures and properties.

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Area of Science:

  • Nanomaterials Science
  • Surface Chemistry
  • Coordination Chemistry

Background:

  • Atomically precise silver nanoclusters (NCs) are of significant research interest.
  • Protective ligands are essential for stabilizing silver NCs and preventing aggregation.
  • Conventional ligands include thiolates, phosphines, alkynyls, chalcogens, and halogens.

Purpose of the Study:

  • To review recent advancements in novel protecting ligands for silver nanoclusters.
  • To highlight four classes of newly developed surface ligands for silver NCs.
  • To encourage further exploration of novel ligated silver NCs.

Main Methods:

  • Literature review of publications up to February 2020.
  • Focus on synthesis, structures, and properties of silver NCs stabilized by new ligands.
  • Categorization of new ligands into nitrogen-donor organic ligands, oxygen-donor inorganic ligands, metalloligands, and macrocyclic hosts.

Main Results:

  • Introduction of four classes of novel silver NCs stabilized by newly developed surface ligands.
  • Demonstration of new ligands' critical role in determining silver NC size, structure, and properties.
  • Exploration of functional silver NCs beyond conventional passivation agents.

Conclusions:

  • Novel protecting ligands are expanding the functional capabilities of silver nanoclusters.
  • The field is moving towards exploring new types of surface ligands for advanced silver NCs.
  • Future research directions are suggested for freshly ligated atomically precise silver NCs.