Chelate-type Schiff base acting as a colorimetric sensor for iron in aqueous solution

A semi‐aza‐crown‐based chemosensor for colorimetric detection of iron(III) and iron(II) in aqueous media with large bathochromic shift

“…The peak at 510.19 was assignable to EDDAN ‐2 hydrogen(I)+ iron(III) [calculated m/z = 510.12]. These results led us to assume that iron(II) in the EDDAN ‐iron(II) species must be rapidly oxidised to iron(III) by oxygen molecules .…”

A Phenanthroimidazole‐based Fluorescent Turn‐Off Chemosensor for the Selective Detection of Cu2+ in Aqueous Media

“…[26][27][28][29][30] It is well known that chemical probes with large Stokes shifts are advisable because when incident light and emission signal are separated enough, the self-absorption can be avoided and the detection sensitivity could be improved. [36][37][38][39][40] With these points in mind, we devised a highly conjugated sensor 1 including phenanthrene-9,-10-dione and 2,3-dihydroxybenzaldehyde moieties, which was expected to have a special fluorescent character to a specific metal ion. [36][37][38][39][40] With these points in mind, we devised a highly conjugated sensor 1 including phenanthrene-9,-10-dione and 2,3-dihydroxybenzaldehyde moieties, which was expected to have a special fluorescent character to a specific metal ion.…”

Carbon dots prepared by solid state method via citric acid and 1,10-phenanthroline for selective and sensing detection of Fe2+ and Fe3+

“…Currently the detection of Fe 2+ and Fe 3+ can be achieved by using different analytical methods like atomic absorption spectroscopy (AAS) [12], flame atomic absorption spectroscopy, mass spectroscopy [13], coupled plasma spectroscopy (ICP-MS) [14], electrochemical [15], spectrophotometric [16], colorimetric [17,18], electron paramagnetic resonance (EPR) [16]. But the major drawback of these techniques is as lengthy pretreatment sample procedures, and also to some extent the sophisticated instrumentation.…”