A highly sensitive and selective fluorescent sensor for Al3+ ions based on thiophene-2-carboxylic acid hydrazide Schiff base

Abstract

An efficient fluorescent receptor (E)-N-[(2-hydroxy-naphthalen-1-yl)methylene]thiophene-2-carbohydrazide (THN) for Al 3+ ions was synthesized and characterized by physicochemical and spectroscopic tools along with single crystal X-ray crystallography. This is the first report showing the crystal structure of THN and its sensing property for Al 3+ ions. THN selectively and sensitively detects Al 3+ ions without any interference among various cations

Triazolyl-acylhydrazone derivatives as novel inhibitors for copper corrosion in chloride solutions

“…As a derivative of Schiff bases, acylhydrazone compounds can act as ditopic ligands, and show the potential to form multi-adsorption structures with metal atoms [41,42]. A number of transition metal complexes of acylhydrazones have been reported to exhibit remarkable corrosion inhibition [43,44]. Furthermore, groups of various natural aldehydes containing p-electrons and electronegative hetero-atoms also have a strong adsorptive ability on metal surface, severing as corrosion inhibitors in corrosive environments.…”

Two Schiff-base fluorescent sensors for selective sensing of aluminum (III): Experimental and computational studies

“…In general, as a hard-acid, it has been found that Al 3+ prefers a coordination sphere containing N and O as hard-base donor sites, on the other hand, the Schiff-base could provide a nitrogen-oxygen-rich coordination environment for the hard-acid Al 3+ [23][24][25][26]. Therefore, it can be conceived that the Schiff-base would develop a fluorescent probe for detection of Al 3+ .…”

Versatile coordination behaviour of a multi-dentate Schiff base with manganese(II), copper(II) and zinc(II) ions and their corrosion inhibition study

“…A number of transition metal complexes of aroylhydrazones have been reported to exhibit catalytic [10], sensing [11,12], corrosion inhibition [13] and biological activities [14][15][16][17]. High-spin Mn(II) materials can efficiently enhance the relaxation rates of water protons and thus act as contrast agents for magnetic resonance imaging (MRI) [18].…”