A Fused Benzothiazolo‐Pyrimidine‐Based Chemosensor for Selective Optical Detection of Fe³⁺ and I⁻ Ions in Aqueous Media

Abstract

A novel fused benzothiazolo-pyrimidine based optical chemosensor 4-imino-2-methylsulphanyl-4H-9-thia-1,4a-diaza-fluorene-3-cabonitrile (BTP-1) was designed and synthesized efficiently for the selective recognition of Fe 3 + and I À ions from the aqueous medium. Sensor BTP-1 selectively recognizes Fe 3 + ions through the quenching of fluorescence emission intensity at 454 nm and I À ions through a hyperchromic shift in UV-Vis spectra. The recognition of both Fe 3 + and I À ions was found free from the interference of other inspected cations and anions, respectively.[a] N.

Fe3+ Selective Pyrimidine Based Chromogenic and Fluorogenic Chemosensor

“…However, there is a need of novel chemosensors that can be applied to sense Fe 3+ both by UV-Vis and fluorescence method from aqueous medium. As a part of our ongoing research to develop cost-effective and easy-to-prepare optical chemosensors [16][17][18][19], a new chemosensorN-(pyrimidin-2-yl)thiophene-2-carboxamide (PTC)was introduced for the detection of Fe 3+ . The donor atoms like O, S and N in PTC makes this easy-to-prepare receptor an ideal candidate to develop as metal ions sensor.…”