An easy way to prepare reusable rhodamine-based chemosensor for selective detection of Cu2+ and Hg2+ ions

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu2+ Ion in Irrigation Water by Schiff Base

“…Some of the recently reported organic sensors for Cu 2+ ion detection include those based on chromone and pyridine derivatives, [13] chromone Schiff base, [14] diamino pyridine derivative (DAPCS), [15] all of these have higher detection limit values (micro molar range) than the current study (nano molar range). Other Pyrazolidine‐3,5‐dione, [16] piperazine‐based Schiff base, [17] and rhodamine hydrazide linked P(VBA‐co‐DVB) microbead [18] sensors also possessed higher LOD than present work, along with multi‐ion detection, making them less sensitive. Also, 2‐amino‐6‐methyl pyridine Schiff base [19] with LOD of 0.25 μM is highly pH specific.…”

Synthesis and Application of Fluorescent Polymer Micro‐ and Nanoparticles

“…Ozmen et al reported the preparation of chemosensor based on rhodamine hydrazide tethered polymer particles. [93] The resultant polymer particles displayed both fluorescence turn-on as well as colorimetric response to Cu 2+ and Hg 2+ . In addition, the fluorescence turn-on response was in linear proportion to the Cu 2+ and Hg 2+ , and the detection limits of Cu 2+ and Hg 2+ were 5.06 × 10 −7 m and 3.90 × 10 −7 m, respectively.…”

“…In another work, Ozmen et al reported the preparation of rhodamine hydrazide tethered polymer particles based on precipitation polymerization and subsequent surface modification. [93] Specifically, crosslinked particles were first prepared by precipitation copolymerization of vinyl benzaldehyde and divinylbenzene, followed by linking rhodamine hydrazine to the particles through imine bonds. Furthermore, the authors used the as-prepared fluorescent microparticles as chemical sensors, demons trating their application potential in the selective detection of Hg 2+ and Cu 2+ ions.…”

Recent advances in fluorescent materials for mercury(ii) ion detection

“…The sensing mechanism of these probes is mainly based on the Hg 2+ ion-induced structural conversion between the spirocyclic and open-cycle forms of rhodamine unit. 146–149 Recently, Vanjare et al 150 have designed and synthesized a novel kind of rhodamine-based fluorescent probe of Hg 2+ ions based on a rhodamine 6 G molecule. As shown in Fig.…”