&lt;strong&gt;Synthesis, characterization, &lt;/strong&gt;&lt;strong&gt;solvatochromic,&lt;/strong&gt;&lt;strong&gt; antioxidant and antibacterial activities investigation of 2,2'-((1E,1'E)-((1,2,5-oxadiazole-3,4-diyl)bis (azanylylidene))bis(methanylylidene))bis(4-(phenyldiazenyl)phenol)&lt;/strong&gt;