Comparative study of colorimetric sensors based on newly synthesized Schiff bases

A simple and facile colorimetric chemosensor for selective detection of Cu2+ ion in aqueous solution

“…The design of ligands for the selective complexation of suitable guests such as metal cations and anions has been an important goal of simple organic and supramolecular chemistry [45][46][47]. In this regard, the ability to operate a naked-eye colorimetric response to the analyte is an attractive approach to the design of sensing molecules.…”

A novel optical sensor for copper ions based on phthalocyanine tetrasulfonic acid

“…Many techniques are previously applied for copper detection such as atomic absorption spectrometry [10], inductively coupled plasma mass spectroscopy (ICP-MS) [11], ion selective membrane electrode [12][13][14][15][16], voltammetry [17,18], but fluorescence has provided high selective, sensitive, low-cost and rapid implementation method for detection of metal ions in last decades [19][20][21][22][23][24]. Various fluorescent chemosensors for Cu 2+ have been designed by using different fluorophores [25][26][27][28][29][30][31][32][33][34][35][36], which exhibited good selectivity and sensitivity toward copper ions but the utility of many of them is limited that are needed complex multistep synthesis procedure and higher interference with Ni 2+ , Co 2+ , and Fe 3+ ions.…”

A reversible fluorescence chemosensor for sequentially quantitative monitoring copper and sulfide in living cells

“…It uses a fluorescein dyes as the fluorophore and aldazine salicylaldehyde-based as the Cu 2 þ binding site [43][44][45][46][47]. FL exhibited obvious fluorescent quenching and adsorption increasing after binding to Cu 2 þ to form FL-Cu 2 þ ensemble.…”