A dual chemosensor for both Cu2+ and Al3+: A potential Cu2+ and Al3+ switched YES logic function with an INHIBIT logic gate and a novel solid sensor for detection and extraction of Al3+ ions from aqueous solution

Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

“…The obtained K a strongly supported RECM-Cu 2+ 1:1 binding stoichiometry and showed a strong probe in comparison with some recently-reported work on Cu 2+ fluorescent and colorimetric probes [5,16,46]. Most of the various Cu 2+ -rhodamine-based chemosensors have already been developed and involve a coordination mode with 1:1 stoichiometry, which is the most possible binding mode of rhodamine-based chemosensors and Cu 2+ [5,24,25,32]. However, there are few types of research demonstrating different molar ratios for newly-developed rhodamine-based derivatives and Cu 2+ .…”

“…RECM shows an acceptable efficiency in terms of LOD in comparison with several types of research which have been done into the designation of optical chemosensors to detect and determine Cu 2+ in aqueous media over the past decades. Kim et al [32] designed and synthesized a new simple rhodamine-B derivative equipped with the 4-nitrosalicylaldimine-based receptor (RB-HN) which exhibits selective optical recognition for Cu 2+ over commonly-interfering metal cations in DMSO-H 2 O media. RB-HN demonstrates a color change from yellow to pink upon gradual titration with Cu 2+ and a 1:1 RB-HN-Cu 2+ complex mode in the binding stoichiometry.…”

Selective and sensitive colorimetric detection of Hg(II) in aqueous solution by quinone-diimidazole ensemble with mimicking YES-OR-INHIBIT logic gate operation

“…A simple molecule with its interesting spectroscopic results mimics the logic operations (YES-OR-INHIBIT). In particular, a system has some chemically encoded information as input and UV-vis or fluorescence as output [40,41]. In the present study, different modes were spotted when the receptor R1 was treated with various cations such as Hg(II), Zn(II) and Cd(II).…”

Synthesis, Kinetics, and Equilibrium Study of Highly Sensitive Colorimetric Chemosensor for Monitoring of Copper Ions based on Benzo[f]fluorescein Dye Derivatives

“…This increase in the absorbance and isosbestic point is confirming the sensitivity of BFFSH to Cu 2+ ions in a solution and the formation of a new BFFSH ‐ Cu complex in equilibrium with the free BFFSH . [11e] On the other hand, this changes in absorption bands of BFFSH were measured (Figure ) and used to determine the detection limits of Cu 2+ ions by BFFSH . The absorbance values at 432 nm were plotted vs. the Cu 2+ ion concentrations to obtain the slope of the calibration curve and to determine the detection limit using Equation (3) .…”

“…Therefore, chemosensors that have detection limit lower than that would be satisfactory to detection of Cu 2+ in water samples than other complicated methods. A considerable number of relevant works concerned with colorimetric chemosensor for monitoring of Cu 2+ ions have been reported . It was observed that most of these colorimetric chemosensor have different weaknesses such as poor detection limit, long response time, and interference with other transition metal ions .…”