pH-sensitive 4,(4-Nitrophenoxy)benzeneamine) derived azo dye: X-ray crystallographic, DFT and electrochemical studies

Unraveling Halochromism of Azo‐Based Sulphonamide and Its Real‐World Applications: A Combined Experimental and Theoretical Approach

“…[1,[3][4][5][6] Azo dyes find wide applications due to the chromophoric strength resulting from specific substitution patterns on the linked aromatic or heteroaromatic entities linked by À N=NÀ bond. [7][8][9] Azo compounds are small in size and possess properties that can be reversibly changed by external stimuli, including light, heat, ions, electric current flow, solvents, vapors, mechanical action, time, magnetic fields, and biological environments. This leads to phenomena such as photochromism, thermochromism, ionochromism, electro-chromism, solvatochromism, vapochromism, mechanochromism, chronochromism, magnetochromism, and biochromism.…”

“…These properties have led to the application of azo dyes in various fields, including food coloring cosmetics, plastic indicators, electro‐optical devices, storage, liquid crystal display, and as antimicrobial, antitumor, antioxidant, and antidiabetic agents [1,3–6] . Azo dyes find wide applications due to the chromophoric strength resulting from specific substitution patterns on the linked aromatic or heteroaromatic entities linked by −N=N− bond [7–9] . Azo compounds are small in size and possess properties that can be reversibly changed by external stimuli, including light, heat, ions, electric current flow, solvents, vapors, mechanical action, time, magnetic fields, and biological environments.…”