Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/124180
Title: NOVEL SYNTHETIC STRATEGIES FOR ULTRASMALL METAL NANOCLUSTERS: TOWARDS ATOMIC PRECISION
Authors: YU YONG
Keywords: gold nanoclusters, CO reduction, monodisperse, size tunable, luminescence
Issue Date: 15-Aug-2013
Citation: YU YONG (2013-08-15). NOVEL SYNTHETIC STRATEGIES FOR ULTRASMALL METAL NANOCLUSTERS: TOWARDS ATOMIC PRECISION. ScholarBank@NUS Repository.
Abstract: In recent years, ultrasmall metal nanoclusters (NCs) with core sizes smaller than 2 nm have emerged as a new direction in nanoparticle research due to their discrete and size-dependent electronic structures and molecular-like properties. Metal NCs are typically stabilized by a particular organic ligand in solution, such as proteins and thiolate ligands. The ligand-protected metal NCs can be denoted as MnLm, where M is the metal, L is the organic ligand, and n and m are specific integers. Synthesis of monodisperse metal NCs (with precise control of n and m) in sufficiently large quantities (up to several hundred micrograms) is necessary for establishing reliable size-property relationships and exploring potential applications, which is, however, unavailable in the current development. This PhD study has developed a versatile and scalable synthetic method which utilized a unique reactive gas, carbon monoxide (CO) to furnish a mild and well-controlled reaction environment for NC growth, in which all NC attributes, including size, structure, composition, and surface ligand, could be precisely controlled.
URI: http://scholarbank.nus.edu.sg/handle/10635/124180
Appears in Collections:Ph.D Theses (Open)

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