Synthesis, Solvatochromism, Antibacterial Activity and Dyeing Performance of Tricyanofuran‐Hydrazone Analogues

Abstract

Four novel tricyanofuran disperse dyestuffs 3a‐d bearing hydrazone moiety were synthesized in order to investigate their possible antibacterial activity. The hydrazone moiety was introduced via azo‐coupling of the tricyanofuran with the appropriately functionalized diazonium salt. The optical properties of these compounds showed interesting solvatochromic properties. The absorption peaks are observed in the wavelength range 454–513 nm. It can also be seen that they display different maximum emissions in the wavelength range 528–615 nm. The functional groups attached to the hydrazone moiety influenced both on absorption and emission maxima. The prepared hydrazone‐based disperse dyes were applied for dyeing polyester fabrics, affording satisfactory results. Furthermore, compounds 3a and 3c demonstrated a relatively strong antibacterial activity against some selected gram positive Staphylococcus aureus and Bacillus subtilis; and gram negative Escherichia coli and Pseudomonas aeuroginosa employing Ampicillin as standard drug.

Synthesis, Solvatochromic Performance, pH Sensing, Dyeing Ability, and Antimicrobial Activity of Novel Hydrazone Dyestuffs

“…Solvatochromic materials attract much interest due to their potential applicability as sensors in determining solvent polarity, optical light-emitting diodes, dye sensitized solar cells, and electro-and photoluminescent materials for laser purposes, in molecular electronics for the production of molecular switches, colorimetric chemosensors in detection of explosives, and volatile organic materials [1][2][3][4][5][6][7][8]. Generally, a solvatochromic material can be defined as a chemical substance able to alter its color in solvents of different polarities due to a variation in its absorption or emission spectra in each solvent.…”

A Phosphorous‐Aluminium‐Nitride Synergistic Flame Retardant to Enhance Durability and Flame Retardancy of Cotton

“…Due to the development of society and the improvement of people‘s living standards, the application of cotton fabrics has become more and more extensive, such as apparel, decorative fabrics, and industrial fabrics . However, cotton fabrics are extremely flammable, threatening human life and property .…”

Antimicrobial sulphonamide azo dyes

“…As far as the environmental fate of pollutants is concerned, negatively charged species (with a few exceptions such as phosphates) are very soluble, adsorbed little by soil aggregates and easily leached into groundwater . Because of the low adsorption of sulpha drugs to soil, these compounds can reach surface water and groundwater . The influence of sulphonamides on microbial consortia is still under debate, but a significant effect on soil microorganisms has been reported recently .…”

“…37,38 Because of the low adsorption of sulpha drugs to soil, these compounds can reach surface water and groundwater. [39][40][41][42][43][44] The influence of sulphonamides on microbial consortia is still under debate, but a significant effect on soil microorganisms has been reported recently. [45][46][47][48][49] The current article reviews the recent trends in the synthesis of sulphonamide azo dyes and their application as high-performance antimicrobial dyes.…”