Dual-Channel More Flexible Salamo-Like Chemosensor for Fluorogenic Sensing of Copper Ion in Semi-Aqueous Medium

Li, R.-Y.; Gao, Su-Xia; Liu, Ch.; Dong, Wen‐Kui; Ding, Yujie J.

doi:10.1007/s10812-022-01341-5

Cited by 71 publications

(5 citation statements)

References 50 publications

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“…Selectivity is the most important target of fluorescent probes [24–25] . To confirm the selective fluorescence response of N‐CQDs to CN − , the effects of common anions (Ac − , Br − , H 2 PO 4 − , HPO 4 2− , PO 4 3− , CN − , N 3− , NO 2 − , S 2 O 3 2− , SO 4 2− ) on the fluorescence intensity of N‐CQDs were investigated under the same conditions.…”

Section: Resultsmentioning

confidence: 99%

“…Selectivity is the most important target of fluorescent probes. [24][25] To confirm the selective fluorescence response of N-CQDs to CN À , the effects of common anions (Ac À , Br ) on the fluorescence intensity of N-CQDs were investigated under the same conditions. When the excitation wavelength of N-CQDs is 495 nm, only the (F 0 À F)/F 0 value (The fluorescence quenching effect) of CN À in the solution increased significantly (Figure 5), indicating that N-CQDs have a high selectivity for CN À in the presence of other interfering anions.…”

Section: Evaluation Of the Detection Selectivitymentioning

confidence: 99%

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Synthesis of Nitrogen‐Doped Carbon Quantum Dot (N‐CQDs) for Cyanide Detection

Guo,

Wang,

Duan

et al. 2023

ChemistrySelect

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Selective and sensitive detection of Cyanide (CN−) is critical essential due to it is one of the most lethal chemicals and threat to human health. In this study, nitrogen‐doped carbon quantum dots (N‐CQDs) were synthesized by one‐step hydrothermal method using 4‐aminosalicylic acid and tartaric acid as raw materials. The prepared N‐CQDs were spherical particles with good water solubility and uniform particle size distribution, the optimal excitation and emission wavelengths of N‐CQDs were 495 nm and 514 nm, respectively. Based on the selective fluorescence quenching effect between CN− and N‐CQDs, achieving accurate and rapid detection of CN−. Fluorescence quantum yield (PLQY) of N‐CQDs is 39 %, and the other competing anions showed little or no interference to CN−. For highly sensitivity detections of N‐CQDs under optimal conditions, the fluorescence quenching degree was linearly correlated with the CN− concentration in the range of 0–100 μM (R2=0.9929).

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Section: Resultsmentioning

confidence: 99%

Section: Evaluation Of the Detection Selectivitymentioning

confidence: 99%

Synthesis of Nitrogen‐Doped Carbon Quantum Dot (N‐CQDs) for Cyanide Detection

Guo,

Wang,

Duan

et al. 2023

ChemistrySelect

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“…A synthetic route to the symmetrical bis (salamo)‐like ligand H 3 L is shown in Scheme 1 46–48 . 1,2‐Bis(aminooxy)ethane and 2‐[ O ‐(1‐ethoxy amide)]oxime‐2‐naphthol were obtained according to procedures in previous reports, 49 and 5‐bromo‐2‐hydroxyisophthalaldehyde was prepared according to the Duff reaction procedure 50 .…”

Section: Methodsmentioning

confidence: 99%

Experimental and computational studies of two binuclear Co(II) and Ni(II) bis(salamo)‐like complexes

Yan,

La,

et al. 2023

Applied Organom Chemis

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Acetate‐bridged binuclear Co(II) and Ni(II) complexes, [Co2(L)(μ‐OAc)(EtOH)] (1) and [Ni2(L)(μ‐OAc)(EtOH)] (2) were synthesized via the reaction of a new bis(salamo)‐like ligand with two different metal(II) acetates. X‐ray single crystal diffraction analyses showed that two metal(II) ions (Co or Ni) occupy two sets of N2O2 cavities, respectively. The acetate group bridges the two metals, and the ethanol oxygen atom participates in the coordination. Furthermore, UV–vis titration experiments clearly indicated that the complexation between H3L and M(II) ions leads to the 1:2 complexes [(L)M2]+ through a highly synergistic process. Bond valence sum (BVS) calculations exhibited that the Co(II) and Ni(II) ions are divalent. Secondly, the ligand H3L highest occupied molecular orbital–lowest unoccupied molecular orbital (HOMO‐LUMO) gap analysis and surface electrostatic potential were theoretically analyzed by theoretical calculation (density functional theory), and the reactivity of M(II) ions and the ligand in the complex formation process was demonstrated. Finally, the microscopic properties of the complexes were deeply understood through the calculation of the weak intramolecular interactions and the unstressed regions outside the complexes.

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“…59,60 In addition, to examine complexes 1−4 formation reaction and binding ratio, spectrophotometric titration experiments were executed by the incremental addition of M 2+ ions (1 × 10 −3 M) to 2 mL of EtOH solution of the free ligand (1 × 10 −2 M) (Figure 16). 61 During the gradual addition of M 2+ ions (0−4.0 eq. for complex 1, 0−3.0 eq for 2, 0−1.0 eq for 3, and 0−1.0 eq for 4), the absorption intensities of the bands at 300 and 312 nm gradually increased and those at 343 and 355 nm gradually decreased, while new absorption bands centered at 392, 396, 424, and 395 nm for complexes 1−4, respectively, were observed, which are attributed to the metal-to-ligand and ligand-to-ligand charge transfer transitions.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Coordination-Driven Salamo-Salen-Salamo-Type Multinuclear Transition Metal(II) Complexes: Synthesis, Structure, Luminescence, Transformation of Configuration, and Nuclearity Induced by the Acetylacetone Anion

Yan

et al. 2023

Inorg. Chem.

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A flexible polydentate Salamo-Salen-Salamo hybrid ligand H 4 L was designed and synthesized, which has rich pockets (salamo and salen pockets) so that it may have fascinating coordination patterns with transition metal(II) ions. Four multinuclear transition metal(II) complexes, novel butterflyshaped homotetranuclear 4), have been synthesized and characterized by single-crystal X-ray diffraction. The effects of different anions [OAc − and (O 2 C 5 H 7 ) 2− ] on the complexation behavior of H 4 L with transition metal(II) ions were studied by UV−vis spectrophotometry. The fluorescent properties of the four complexes were studied with zebrafish, which are expected to be a potential light-emitting material. Ultimately, interaction region indicator (IRI) valuations, Hirshfeld surface analyses, density functional theory (DFT & TD-DFT), electrostatic potential analyses (ESP), and simulations were carried out to further demonstrate the weak interactions and electronic properties of the free ligand and its four complexes.

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Dual-Channel More Flexible Salamo-Like Chemosensor for Fluorogenic Sensing of Copper Ion in Semi-Aqueous Medium

Cited by 71 publications

References 50 publications

Synthesis of Nitrogen‐Doped Carbon Quantum Dot (N‐CQDs) for Cyanide Detection

Synthesis of Nitrogen‐Doped Carbon Quantum Dot (N‐CQDs) for Cyanide Detection

Experimental and computational studies of two binuclear Co(II) and Ni(II) bis(salamo)‐like complexes

Coordination-Driven Salamo-Salen-Salamo-Type Multinuclear Transition Metal(II) Complexes: Synthesis, Structure, Luminescence, Transformation of Configuration, and Nuclearity Induced by the Acetylacetone Anion

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