Unveiling of a smartphone-mediated ratiometric chemosensor towards the nanomolar level detection of lethal CN^-: combined experimental and theoretical validation with the proposition of a molecular logic circuitry.

ABSTRACT: A promising naphthalene-functionalized ratiometric chemosensor (E)-1-((naphthalen-5-yl) methylene)-2-(2,4-dinitrophenyl) hydrazine (DNMH) is unveiled in the present work. DNMH demonstrates brisk discernible colorimetric response from yellow to red in the presence of CN^-, a lethal environmental contaminant, in a near-perfect aqueous medium with a LOD of 278 nM. The "key role marker" controlling the electrochemical and non-covalent H-bonding interaction between DNMH and CN^- is through the commendable role of acidic -NH functionalities. Kinetic studies reveal a pseudo second order reaction rate and the formation of an unprecedented photostable adduct. The negative value of ΔG as evaluated from ITC substantiates the spontaneity of the DNMH⋯CN^- int

SUBMITTER: Paul S 

PROVIDER: S-EPMC9039805 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature