Phenazine containing indeno-furan based colorimetric and “on–off” fluorescent sensor for the detection of Cu 2+ and Pb 2+

Aggarwal, Komal; Khurana, Jitender M.

doi:10.1016/j.jlumin.2015.06.027

Cited by 41 publications

(11 citation statements)

References 51 publications

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“…From these data, we can see that in the last five years the number of reported probes working on a Turn-OFF operation mode, as H 2 SB showed, is comparable to that working on a Turn-ON mode. Regarding to λ ex /λ em , H 2 SB shows large Stokes shift of 110 nm, placing it in that group of probes with minimal interference from self-absorption for Cu 2+ ions determination [38][39][40][41]46,49,50,52,53,55,59,61,63,64]. H 2 SB also offers a LOD lower than the majority of the recently reported fluorescence probes for Cu 2+ ions determination.…”

Section: Fluorescence Studies On the H 2 Sb-m N+ Interactionmentioning

confidence: 89%

Taking Advantage of the Coordinative Behavior of a Tridentate Schiff Base Ligand towards Pd2+ and Cu2+

et al. 2019

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We have explored the suitability of an O,N,N-donor Schiff base (H 2 SB) for obtaining dinuclear complexes with heavy metal ions such as Cu 2+ , Zn 2+ , Ni 2+ , and Co 2+ (borderline acids) as well as Pd 2+ and Cd 2+ (soft acids). Spectroscopic studies demonstrated that the complexation of H 2 SB and Cu 2+ , Zn 2+ , Ni 2+ , Co 2+ , Pd 2+ , and Cd 2+ occurred at a 1:1 stoichiometry. We have found two square planar centers with Pd-N-Pd angles of 93.08(11) • and a Pd-Pd distance of 3.0102(4) Å in Pd 2 (SB) 2 ·Me 2 CO. This Pd-Pd distance is 30% shorter than the sum of the van der Waals radii, which is in accordance with a strong palladophilic interaction. Fluorescence studies on H 2 SB-M 2+ interaction showed that H 2 SB can detect Cu 2+ ions in a sample matrix containing various metal ions (hard, soft, or borderline acids) without interference. Determination of binding constants showed that H 2 SB has a greater affinity for borderline acids than for soft acids.Crystals 2019, 9, 407 2 of 15 obtaining dinuclear complexes with heavy metal ions such as Cu 2+ , Zn 2+ , Ni 2+ , and Co 2+ (borderline acids) as well as Pd 2+ and Cd 2+ (soft acids) through a double µ 2 -N sulphonamido bridge (Figure 1 , right). Spectroscopic studies demonstrated that the complexation of H 2 SB and Cu 2+ , Zn 2+ , Ni 2+ , Co 2+ , Pd 2+ , and Cd 2+ occurred at a 1:1 stoichiometry. The crystal structure of Pd 2 (SB) 2 ·Me 2 CO, which has been elucidated by using single crystal X-ray diffraction techniques, has shown a Pd-Pd distance of 3.0102(4) Å, which is sensibly shorter than the sum of the van der Waals radii (4.30 Å). This latter value corresponds to that deduced from recent statistical analyses of intermolecular contacts in deposited X-ray crystal structures, paying also special attention to homoatomic contacts involving Pd, Pt, Cu, Ag, and Au [26]. Fluorescence studies on the interaction of H 2 SB towards heavy metal ions such as Cu 2+ , Zn 2+ , Ni 2+ , Co 2+ , Cd 2+ , and Pd 2+ revealed the ability of H 2 SB to detect Cu 2+ in aqueous solutions containing various metal ions (hard, soft, or borderline acids) without interference. Determination of binding constants showed that H 2 SB has a greater affinity for borderline acids than for soft acids.Crystals 2019, 9, x FOR PEER REVIEW 2 of 15 dinuclear complexes with heavy metal ions such as Cu 2+ , Zn 2+ , Ni 2+ , and Co 2+ (borderline acids) as well as Pd 2+ and Cd 2+ (soft acids) through a double μ2-Nsulphonamido bridge (Figure 1, right). Spectroscopic studies demonstrated that the complexation of H2SB and Cu 2+ , Zn 2+ , Ni 2+ , Co 2+ , Pd 2+ , and Cd 2+ occurred at a 1:1 stoichiometry. The crystal structure of Pd2(SB)2·Me2CO, which has been elucidated by using single crystal X-ray diffraction techniques, has shown a Pd-Pd distance of 3.0102(4) Å, which is sensibly shorter than the sum of the van der Waals radii (4.30 Å). This latter value corresponds to that deduced from recent statistical analyses of intermolecular contacts in deposited X-ray crystal structures, paying also special a...

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Section: Fluorescence Studies On the H 2 Sb-m N+ Interactionmentioning

confidence: 89%

Taking Advantage of the Coordinative Behavior of a Tridentate Schiff Base Ligand towards Pd2+ and Cu2+

et al. 2019

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“…Also, due to optical properties phenazine derivatives are useful in electroactive materials like organic light emitting diode (OLED), photoactive materials for solar cells, fluorescent marker and stain for subcellular localizations . Furthermore, in recent year's phenazine derivatives which alter their optical properties upon binding with analyte are reported in the literature . Hence, in the present study, we report the synthesis and characterization of phenazine derivative, 2‐[3‐methyl‐5‐(4‐nitrophenyl)thiophen‐2‐yl]‐ 1H ‐imidazo[ 4,5‐b ]phenazine ( MNTPZ) as a colorimetric and fluorescent probe.…”

Section: Introductionmentioning

confidence: 96%

A Phenazine based colorimetric and fluorescent chemosensor for sequential detection of Ag⁺ and I⁻ in aqueous media

et al. 2019

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A new colorimetric and fluorescent probe MNTPZ based on 1H‐imidazo[4,5‐b]phenazine derivative has been designed and synthesized for successive detection of Ag+ and I−. The probe MNTPZ shows selective colorimetric response by a change in color from yellow to orange and “turn‐off” fluorometric response upon binding with Ag+ in DMSO: Water (pH = 7, 1:1, v/v) over other cations. The binding mode of probe MNTPZ to Ag+ was studied by Job's plot, 1H NMR studies, FT‐IR spectroscopy and DFT calculations. Moreover, the situ generated probe MNTPZ+ Ag+ complex acted as an efficient fluorometric “turn‐on” probe for I− via Ag+ displacement approach. The detection limit of probe MNTPZ for Ag+ and the resultant complex probe MNTPZ+ Ag+ for I− were determined to be 1.36 μmol/L and 1.03 μmol/L respectively. Notably, the developed probe was successfully used for quantitative determination of I− in real samples with satisfactory results.

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“…Earlier methods of metal ion detection include atomic absorption spectrometry, inductively coupled plasma‐atomic emission spectrometry, and inductively coupled plasma‐mass spectrometry. Despite their various merits, the high cost of equipment, time‐consuming nature and demanding procedures involved placed restrictions on the application of these methods . By comparison, the fluorescence technique features high selectivity and sensitivity, simplicity of operation, a comparatively low instrumentation cost and quick analytical detection, thereby making it a much better sensing technique .…”

Section: Introductionmentioning

confidence: 99%

A new, highly potent 1,8‐naphthalimide‐based fluorescence turn‐off chemosensor capable of detecting Cu(II) ions in real‐world water samples

Han

Mao

et al. 2018

Coloration Technology

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The synthesis of a new 1,8‐naphthalimide‐based fluorescence turn‐off chemosensor for the effective detection of Cu(II) ions is reported. The chemosensor MAST was characterised by mp, Fourier Transform‐infrared (FTIR), ultraviolet‐visible (UV‐vis), fluorescence, 1H‐NMR and 13C‐NMR spectroscopy, and mass spectrometry. After treatment with Cu(II) ions in coexistence with various competitive metal ions in a dimethylsulphoxide (DMSO)/4‐(2‐hydroxyethyl)‐1‐piperazineethanesulphonic acid (HEPES) buffer solution (v/v, 1:1; pH 7.4), the chemosensor demonstrated high selectivity towards Cu(II) ions and a fluorescence quenching of 83.67% was observed. In addition, a good linear response for the chemosensor detecting Cu(II) ions was obtained over the concentration range 0.2–1 μm. The combined results of UV‐vis and fluorescence titrations with the Job plot yielded a 1:1 stoichiometric interaction of the chemosensor with Cu(II) ions. The association constant and detection limit were calculated as 1.37 x 106 m−1 and 1.69 x 10−8 m, respectively. Based on results, the quenching response of MAST towards Cu(II) ions could be ascribed to the reverse‐photoinduced electron transfer (PET) mechanism. Finally, the proposed chemosensor was applied to quantify Cu(II) ions in real‐world water samples and excellent recovery rates of 98–105.8% were obtained.

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Phenazine containing indeno-furan based colorimetric and “on–off” fluorescent sensor for the detection of Cu 2+ and Pb 2+

Cited by 41 publications

References 51 publications

Taking Advantage of the Coordinative Behavior of a Tridentate Schiff Base Ligand towards Pd2+ and Cu2+

Taking Advantage of the Coordinative Behavior of a Tridentate Schiff Base Ligand towards Pd2+ and Cu2+

A Phenazine based colorimetric and fluorescent chemosensor for sequential detection of Ag⁺ and I⁻ in aqueous media

A new, highly potent 1,8‐naphthalimide‐based fluorescence turn‐off chemosensor capable of detecting Cu(II) ions in real‐world water samples

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Phenazine containing indeno-furan based colorimetric and “on–off” fluorescent sensor for the detection of Cu 2+ and Pb 2+

Cited by 41 publications

References 51 publications

Taking Advantage of the Coordinative Behavior of a Tridentate Schiff Base Ligand towards Pd2+ and Cu2+

Taking Advantage of the Coordinative Behavior of a Tridentate Schiff Base Ligand towards Pd2+ and Cu2+

A Phenazine based colorimetric and fluorescent chemosensor for sequential detection of Ag+ and I− in aqueous media

A new, highly potent 1,8‐naphthalimide‐based fluorescence turn‐off chemosensor capable of detecting Cu(II) ions in real‐world water samples

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Product

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A Phenazine based colorimetric and fluorescent chemosensor for sequential detection of Ag⁺ and I⁻ in aqueous media