Synthesis of an organic semiconductor by polimerization of 3-amino-1,2,4-triazole

Acid–base behavior of an oligomer of 3‐amino‐1,2,4‐triazole

“…The new material, conveniently doped, turned out to be a semiconductor tetramer, and it showed higher thermal stability than the corresponding monomer. We have also observed that the products at various stages of OATA polymerization showed visible color changes 8…”

“…We have successfully polymerized ATA in acidic media, and we have characterized by spectroscopical, thermal, and physical experiments confirming that it is an oligomer with four units 8. A HCl solution containing ATA was added to an aqueous solution of APS, in the molar relationship 1 : 1.25 at pH 3.0.…”

“…In acidic solution, the salt appears light yellow characteristic absorbance at 400 nm, meanwhile at base solution, the color changes to burgundy with characteristic absorbance at around 480 nm. It is logical to assume that the color changes could be a good premise for the development of acid–base sensors 8…”

Anticorrosive efficiency of alkyd resin-based coatings containing Mg–Zn–Fe mixed oxide-based pigments

“…Higher concentrations of the lamellar and needle-shaped pigment particles as well as of the lamellar core-shell pigments (at PVC=15%), on the contrary, brought about some drying rate decrease because oxygen penetrated more slowly through the fi lm of this paint (drying by the oxypolymerization mechanism) [50]. The paint did not attain as high hardness levels during the measurement as the paints containing the isometric and smaller pigment particles.…”

“…On drying day 2, the hardness of the paint with PVC = 10% was 8.4% whereas at PVC = 5%, hardness was 9.3%. This was due to the lower rate of oxygen diffusion through the pigmented paint and hence, lower rate of alkyd resin drying by the oxypolymerization mechanism [50]. The highest hardness throughout the whole period was achieved with the paint fi lm with PVC = 10% (27.3% on Day 40).…”