Stimuli-responsive discriminative detection of Cu2+ and Hg2+ with concurrent sensing of S2- from aqueous medium and bio-fluids by C N fused azophenine functionalized “smart” hydrogel assay @A potential biomarker sensor for Wilson’s disease

Recent endeavours in the development of organo chromo-fluorogenic probes towards the targeted detection of the toxic industrial pollutants Cu2+ and CN−: recognition to implementation in sensory device

“…34). All the probes (35)(36)(37)(38) the PET process from the -N centres of the chemosensor skeleton to the vacant orbital of Cu 2+ . Accordingly, the detection limits were found to be 0.12 Â 10 À6 M, 0.10 Â 10 À6 M, 0.097 Â 10 À6 M and 0.098 Â 10 À6 M for 35-38, respectively.…”

“…Banerjee et al 35 reported the preparation of a colorimetric sensory probe 7 , for the selective detection of aqueous Cu 2+ with an LOD of 470 × 10 −9 M. In the presence of Cu 2+ , the low-energy ICT band of 7 at 400 nm decreased with the gradual generation of new charge transfer band at 510 nm, which is plausibly because of the ligand-to-metal charge transfer (LMCT) transition. This led to promising chromogenic changes from yellow to orangish brown (Fig.…”

Unveiling Role of Metals in Mononuclear Metal‐Complexes for Chemodosimetric Detection of S2− from aqueous medium: Experimental and DFT Corroboration with Real‐Field Application

“…Herein, the peak positions at 472 cm À 1 and 778 cm À 1 indicates the stretching frequencies due to CoÀ N and CoÀ O respectively for the complex SN-1 . [23,24] Interestingly after addition of targeted analyte S 2À , the peaks at the aforementioned positions disappeared with concurrent generation of a new peak at 1004 cm À 1 which is due to the formation of Co-S . [25] The newly generated broad peak around 3500 cm À 1 is due to the presence of intramolecular hydrogen bonding (S⋅⋅⋅HÀ O) between the hydrogen of the OH and the S atom of the SH.…”

Unveiling of a smartphone-mediated ratiometric chemosensor towards the nanomolar level detection of lethal CN−: combined experimental and theoretical validation with the proposition of a molecular logic circuitry

“…20 Most importantly, integration of the chemical output obtained from solution-state sensing with fabricated RGB-based smartphone devices provides an exquisite platform for the coherent recognition of CN À that overcomes the major limitations of the current methodologies. [21][22][23][24] Therefore, as part of our longstanding research endeavor in the supramolecular domain, [25][26][27][28][29][30][31][32][33][34][35] we aimed to thoughtfully design a naphthalene-hydrazine decorated Schiff base organic compound (SOC). Herein, functionalization of the anion recognition site (-NH) with a dinitrophenyl-like chromophore moiety extends the overall p-conjugation within the molecular scaffold.…”

“…Therefore, as part of our longstanding research endeavor in the supramolecular domain, 25–35 we aimed to thoughtfully design a naphthalene–hydrazine decorated Schiff base organic compound (SOC). Herein, functionalization of the anion recognition site (–NH) with a dinitrophenyl-like chromophore moiety extends the overall π-conjugation within the molecular scaffold.…”