Acid-base equilibrium in non-aqueous medium: colorimetric visualization, estimation of acidity constants and construction of molecular logic gates.

ABSTRACT: A reversible acid-base probe, (N¹E, N⁴E)-N¹, N⁴-bis((Z)-3-(4-(dimethylamino)phenyl)allylidene)benzene-1,4-diamine (MM1), is introduced for the colorimetric visualization of acid-base equilibria in non-aqueous media. MM1 displays reversible acidochromic behavior, showing exciting colorimetric change varying from weak to strong acid. Also, we have fabricated a colorimetric paper strip-based test kit to visualize acid-base equilibria. A dipstick experiment has been demonstrated to visualize the acid-base equilibria in the gaseous state. This acid-base probe has also been employed to estimate the pK_a values of several acidic compounds in a non-aqueous medium using overlapping indicator methods. Based on reversible acidochromi

SUBMITTER: Mahato M 

PROVIDER: S-EPMC10801445 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature