Employing a hydrazine linked asymmetric double naphthalene hybrid for efficient naked eye detection of F- : Crystal structure with real application for F-

摘要

An asymmetric hydrazide, (12E, 13E)-2-((naphthalen-l-yl) methylene)-1-(1-(2-hydroxynaphthalen-6-yl) ethylidene) hydrazine (abbreviated as AN) is synthesized and characterized by standard techniques and crystal structure of All has been obtained. The naked eye detection of F- in aqueous acetonitrile (acetonitrile: water = 7:3/v:v) by All has been investigated by UV-Visible titration and in presence of other anions, the limit of detection being 1.31 x 10(-6)(M). The mechanism of F- sensing has been explored by H-1 NMR titration. All undergoes hydrogen bonding with F- followed by deprotonation. The practical utility of AH has been explored by successful test kit response and color change in toothpaste solution. (C) 2018 Elsevier B.V. All rights reserved.