Electrodeposition of polypyrrole films on aluminum surfaces from a p-toluene sulfonic acid medium

Electrodeposition of Polypyrrole Films on Aluminum from Tartrate Aqueous Solution

A síntese eletroquímica de filmes de polipirrol em superfícies de alumínio, em meio aquoso contendo ácido tartárico e pirrol, foi realizada através da técnica galvanostática e por voltametria cíclica. Um mecanismo que considera o crescimento de uma camada porosa de óxido de alumínio em paralelo com a eletrodeposição do filme de polipirrol foi proposto. Foi observado que quanto mais homogênea a ...

Chemical doping of MoS2 multilayer by p-toluene sulfonic acid

We report the tailoring of the electrical properties of mechanically exfoliated multilayer (ML) molybdenum disulfide (MoS2) by chemical doping. Electrical charge transport and Raman spectroscopy measurements revealed that the p-toluene sulfonic acid (PTSA) imposes n-doping in ML MoS2. The shift of threshold voltage for ML MoS2 transistor was analyzed as a function of reaction time. The threshol...

p-Toluene-sulfonic acid, cholesterol determination, and explosions.

HAVE BEEN USING the method of Pearson, Stern, and McGavack (1) for the determination of cholesterol for some time. It has proved to be a convenient and accurate procedure and the reaction had always gone smoothly. One day recently, however, the tubes were set up for the determination as usual, using a freshly prepared solution of p-toluenesulfonic acid. Solutions made from the same bottle of so...

Direct Electrodeposition of Polypyrrole on Aluminum and Aluminum Alloy by Electron Transfer Mediation

Determination of cholesterol with special reference to the use of p-toluene-sulfonic acid.

NTIL RECENT TIMES the methods for the determination of serum sterol have been difficult and time-consuming. As a result, the rmance of this analysis in hospital laboratories has often pred serious problems. It has been our aim to select a relatively and simple method, yet one with a practical degree of accuracy. reliminary investigation of a number of procedures for the detertion of cholesterol...