Synthesis, characterization and photocrosslinking of negative photoresist polymers

Abstract EN

In this study, a new polymers (8) and (13) that contain 1, 2, 3-Thiadiazole or 1, 2, 3- Selenadiazole heterocyclic rings in the side chains from the reaction of the commercial available Polymer (Poly [4-hydroxystyrene] ) with substituted 1, 2, 3-Thiadiazole or 1, 2, 3-.

Selenadiazole were prepared The 1, 2, 3-Thiadiazole and 1, 2, 3-Selenadiazole heterocyclic rings in the side chains of the polymers are able to undergo cycloaddition reaction with evolution of nitrogen, when treated with UV-light either in solution or as thin films.

These reactions were followed up by using spectroscopic techniques like (UV-Visible and Infrared) spectroscopy.

The decrease of the absorption peaks in the UV-spectra and the emission peaks in the IR-spectra that are characteristic of the 1, 2, 3-Thiadiazoles and of the 1, 2, 3-Selenadiazoles is followed. The crosslinking reactions of the polymers were carried out in solution and as a thin film through irradiation with UV-lamp λmax=294 light source (150 watt).

These compounds showed an importance in microlithography, manufacturing of electronic devices and in pharmacological uses as antibacterial and fungus because they contain 1, 2, 3-Thiadiazole and 1, 2, -3 Selenadiazole heterocyclic rings.