Thiocarbamoyl in synthesis of the absorbent bis-mono and dimethine cyanine dyes incorporating porphyrin, thiazoles, thiazolones, thiadiazoles, pyrazoles and pyrazolones

Abstract

In this study, we have introduced an outlook dealing with synthetic heteroarenium-substituted pyridines 1 that are suitable as starting materials for the synthesis of a potential new thiocarbamoyl derivative 3 that may be of value in preparative organic and biological chemistry. Herein, a new series of twelve bis-mono and dimethine cyanine dyes incorporating different heterocyclic compounds were designed by efficient and simple reaction of compound 3 with various organic reagents to overcome the obstacles of energetic reactions, because they took long times. Moreover, the electronic behaviors of these compounds were studied because of their significant activity in many medical and other fields. The photosensitizers were elucidated by spectral and analytical analyses.

Photocatalytic hydrogen evolution over cyanine-sensitized Ag/TiO2

“…This is important for many vital applications. One of the most important types of compounds are cyanine dyes, [8][9][10][11] which have positive effects on photocatalytic activity (Fig. 1).…”

“…Cyanine compounds are distinguished by their broad absorbance in the UV-vis region, molar extinction coefficient, and Stokes shift. 39–42 Hence, cyanine dye is highly attractive for use in the field of H 2 energy. The design of photocatalysts is not the only factor affecting the H 2 evolution process, the structure of the photoreactor also has a significant impact on the production rate.…”

Synergetic effects of Cu/TiO2 sensitized with different cyanine dyes on hydrogen evolution

“…28 They are known as uorophores and are fundamentally recognized by their UV-vis absorption and uorescence spectra, molar extinction coefficients, quantum efficiencies, and Stokes shis. [28][29][30][31] In this research article, the features of pure chromophoric dyes and numerous pathways for their design towards higher efficiency as catalysts in photo-and sono-catalysis are explored.…”