Dual responsive chemosensors for anion and cation: Synthesis and studies of selective chemosensor for F− and Cu(II) ions

A Preliminary Study on Detection of Cadmium (Ii) Ion Using Benzoyl Phenylthiourea

“…The IR spectra show four important stretching bands for υ(N-H), ʋ(C=O), ʋ(C-N) and ʋ(C=S) in both compounds. A medium intensity bands present at 3380 cm -1 for compound M and 3367 cm -1 for compound MI which corresponds to stretching ʋ(N-H) are in agreement with the work done (Devaraj et al, 2009). The N-H bands are often weaker and sharper than an O-H band.…”

Negative Solvatochromism of an Anionic Thiazole‐Based Dye

“…Dyes such as methyl orange, phenolphthalein, or bromothymol blue are well‐investigated for this purpose. Ionic and especially anionic dyes are used in various independent fields as analytical probes, for example, to study interactions of anionic compounds and cationic surfactants,1 as selective chemosensors for both anions and cations,2 and to characterize the adsorption behavior of superabsorbent polymers (SAPs),3 solid agricultural waste, modified charcoal,4 or other compounds that are used as filter materials 5. Another main application of (solvatochromic) dyes is to measure the properties, that is, the polarity of solvent and solvent mixtures 6.…”

A pyrene-linked thiourea as a chemosensor for cations and simple fluorescent sensor for picric acid

“…While each chemosensor showed some advantages such as easy synthesis, high sensitivity, no interference, naked eye detection and application in living cell imaging, our receptor 1 presents a number of attractive analytical features such as dual response, wide linear range, high selectivity, naked eye detection, and living cell imaging applications. [22][23][24][25][26][27][28][29][30] Since the present system consists of two distinct binding sites for the metal ions and the F À ion, receptor 1 has already been reported to act as a uoride ion chemosensor. 21 We thought it is appropriate to examine the effect of competing F À ions on the binding ability of receptor 1 for metal ions and vice versa.…”