Core-shell and hollow nanocrystal formation via small molecule surface photodissociation; Ag at the rate of [Ag.sub.2]Se as an example

Article Abstract:

Metallic Ag nanoparticles are converted to [Ag.sub.2]Se nanoparticles at ambient temperature and open atmosphere by ultraviolet (UV) photodissociation of adsorbed C[Se.sub.2] on the Ag core surface and the photolysis can be prevented at any stage yielding Ag at the rate of [Ag.sub.2]Se core-shell structures of different thickness. The photochemical method can be used to carry out a direct room-temperature phototransformation of metallic into semiconductor nanostructures already assembled on surface templates.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Selenium Compounds, Electric properties, Silver compounds, Carbon compounds, Structure

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Direct functionalization of the hydroxyl group of the 6-mercapta-1-hexanol (MCH) ligand attached to gold nanoclusters

Article Abstract:

A study prepared and characterized Au-MCH nanoclusters of (1.5 plusmn 0.3) nm diameter (MCH = 6-mercapto-1hexanol, HS-(CH2)6-OH). While in nanocluster form dispersed in solution, the OH terminal group of the MCH ligand is directly functionalized through small organic molecule reactions in near-quantitative yield to generate ester, carbamate, carboxylic acid, nitrile, and aldehyde groups, as recorded by the Fourier Transform Infrared (FTIR) spectroscopy.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Gold, Usage, Ligands, Ligands (Chemistry), Fourier transform infrared spectroscopy, Chemical properties

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