فهرست نشریات علمی دسترسی آزاد ایران

Present work includes the synthesis of azo dye namely (E)-4-((4-isopropylphenyl)diazenyl)naphthalen-1-ol, derived from 1-naphthol and 4-isopropylaniline and its Nano silver(I) complex. The synthesized nano compounds were isolated in a high yield 95 and 80% and observed red and dark red color for azo dye ligand and its silver complex respectively. The synthesized compounds were characterized by physical and analytical methods including XRD, elemental analysis, mass, UV-Vis, H-NMR and FTIR spectroscopies. The azo dye showed significant changes in colors and UV-Vis which serves as pH indicator. The ligand displayed a notable color transition from yellow (acidic) to orange-red (neutral) to dark red (basic), reflecting enhanced conjugation and resonance extension under alkaline conditions. ¹H-NMR results supported the successful synthesis of the ligand and its silver complex, showing characteristic aromatic proton signals and confirming structural integrity. The silver complex exhibited slight chemical shifts in the proton environment, attributed to coordination with the silver ion. Collectively, the findings demonstrate the potential application of the synthesized azo dye as a pH-sensitive compound with distinctive optical properties. The synthesized compounds showed potential properties as crystalline nanomaterial.