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

Table 1

UV-visible absorption maxima of dyestuffs 1–3 in different solvents.

Solvent	λmax (nm)
	1	2	3
Methanol	525	485	480
Ethanol	530	480	480
DMSO	540	497	480
DMF	538	485	480
Acetonitrile	455	480	475
Dichloromethane	455	485	485
Tetrahydrofuran	455	485	485
1,4-Dioxane	455	475	475
Toluene	460	485	485