Rubidium impurity diffusion in a poly(ethylene oxide)-sodium iodide polymer electrolyte

Article Abstract:

The diffusion of the radioisotope [super 86]Rb in an amorphous polymer-salt complex consisting of poly(ethylene oxide) and sodium iodide is found to be faster at all temperatures investigated than tracer self-diffusion of the smaller alkali metal cation [super 22]Na. The faster overall transport of Rb as measured by radiotracer diffusion is due to a relatively large fraction of RbI pairs, in conjunction with the finding that the ion pair diffusivities exceed the single carbon diffusivities by 2 orders of magnitude.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Potassium & Sodium Compounds, Sodium & Sodium Compounds, Polyethylene, Electrolytes, Sodium compounds, Iodides, Rubidium

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Gold nanoparticle formation from photochemical reduction of Au(super 3+) by continuous excitation in colloidal solutions. A proposed molecular mechanism

Article Abstract:

A photochemical reduction of Au(super 3+) with continuous 250-400 nm excitation is studied in ethylene glycol, and poly(vinylpyrrolidone) is used as a capping material. Both the reduction of Au(super 3+) by ethylene glycol and its disproportionation lead to the formation of Au(super 0), which upon nucleation and growth form Au nanoparticles.

All Other Basic Organic Chemical Manufacturing, CHEMICALS AND ALLIED PRODUCTS, Industrial inorganic chemicals, not elsewhere classified, Gold Compounds, Ethylene Glycol, Analysis, Optical properties, Photochemistry

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