Deprotonation and dehydration of pristine PPy/DS films during open-circuit relaxation: An ignored factor in determining the properties of conducting polymers

Article Abstract:

The relaxation process of pristine polypyrrole/dodecyl sulfate (PPy/DS) films at open-circuit, immediately after electropolymerization, is studied by in situ spectroelectrochemical, alternating-current conductance, electrochemical quartz crystal microbalance, and pH-metric techniques. A new phenomenon, called irregular reduction, involving apparent redoping and resulting in a polymer with a lower conjugation length is observed, which may occur if the pristine film is reduced without a waiting period.

Polymers, Electric properties, Relaxation phenomena, Relaxation (Physics)

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Low-temperature metallic alloying of copper and silver nanoparticles with gold nanoparticles through digestive ripening

Article Abstract:

A simple and novel alloying method in which noble metal intermetallic nanoparticles are produced in gram quantities via digestive ripening is described. Alloy nanoparticle formation can throw valuable light regarding the way in which digestive ripening occurs.

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Characterization of polypyrrole--Silver nanocomposites prepared in the presence of different dopants

Article Abstract:

Preparation and properties of conducting polypyrrole (PPy)-chloride/ nitrate nanosized silver composites are reported. The observation can be correlated with the different interactions in the PPy-chloride/nitrate-silver systems.

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