Acid–base behavior, electrochemical properties and DFT study of redox non-innocent phenol–imidazole ligands and their Cu complexes

Parween, Arfa; Mandal, Tarun K.; Guillot, Régis; Naskar, Subhendu

doi:10.1016/j.poly.2015.06.014

Cited by 4 publications

(2 citation statements)

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“…The spectral variations were fitted to a speciation model containing three protonation equilibria (Figure S7b), and the protonation equilibrium constants obtained are presented in Table . The highest protonation detected occurs around pH = 11 and is associated with moderate spectral change, being assigned to protonation of the phenoxyl group as found in similar functions . Around pH = 5.5, there is an intense spectral change likely associated with protonation of the tertiary amine attached to the phenoxyl group.…”

Section: Resultsmentioning

confidence: 65%

“…The highest protonation detected occurs around pH = 11 and is associated with moderate spectral change, being assigned to protonation of the phenoxyl group as found in similar functions. 63 Around pH = 5.5, there is an intense spectral change likely associated with protonation of the tertiary amine attached to the phenoxyl group. Below pH = 3.5, there is a very small spectral change possibly arising from protonation of one of the secondary amines of the dihydroperimidine group.…”

Section: Resultsmentioning

confidence: 99%

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Ultrasensitive Colorimetric and Ratiometric Detection of Cu²⁺: Acid–Base Properties, Complexation, and Binding Studies

et al. 2018

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Herein, we report the synthesis and characterization of a chemosensor, 5-(diethylamino)-2-(2,3-dihydro-1 H -perimidin-2-yl)phenol (H L ), synthesized from a condensation between 4-(diethylamino)salicylaldehyde and 1,8-diaminonaphthalene. Upon investigation of the sensing properties of H L , it was found that this sensor may be employed for simple yet efficient detection of Cu 2+ in aqueous methanol solutions. The selective and ratiometric response to Cu 2+ yielded an outstandingly low limit of detection of 3.7 nM by spectrophotometry and is also useful as a naked-eye sensor from 2.5 μM. The system was studied by spectrophotometric pH titrations to determine Cu 2+ binding constants and complex speciation. Binding of Cu 2+ to H L occurs in 1:1 stoichiometry, in good agreement with high-resolution electrospray ionization mass spectrometry (ESI-HRMS) results, Cu 2+ titrations, and Job’s plot experiments, while the coordination geometry was tentatively assigned as square pyramidal by spectroscopic studies.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Ultrasensitive Colorimetric and Ratiometric Detection of Cu²⁺: Acid–Base Properties, Complexation, and Binding Studies

et al. 2018

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Electrocatalytic hydrogen production and carbon dioxide conversion by earth abundant transition metal complexes of the Schiff base ligand: (E)-1-((2-dimethylamino)-propylimino)methyl)naphthalene-2-ol

et al. 2020

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C_i-Symmetry, [2 × 2] grid, square copper complex with the N⁴,N⁵-bis(4-fluorophenyl)-1H-imidazole-4,5-dicarboxamide ligand: structure, catecholase activity, magnetic properties and DFT calculations

et al. 2017

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Acid–base behavior, electrochemical properties and DFT study of redox non-innocent phenol–imidazole ligands and their Cu complexes

Cited by 4 publications

References 22 publications

Ultrasensitive Colorimetric and Ratiometric Detection of Cu²⁺: Acid–Base Properties, Complexation, and Binding Studies

Ultrasensitive Colorimetric and Ratiometric Detection of Cu²⁺: Acid–Base Properties, Complexation, and Binding Studies

Electrocatalytic hydrogen production and carbon dioxide conversion by earth abundant transition metal complexes of the Schiff base ligand: (E)-1-((2-dimethylamino)-propylimino)methyl)naphthalene-2-ol

C_i-Symmetry, [2 × 2] grid, square copper complex with the N⁴,N⁵-bis(4-fluorophenyl)-1H-imidazole-4,5-dicarboxamide ligand: structure, catecholase activity, magnetic properties and DFT calculations

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Acid–base behavior, electrochemical properties and DFT study of redox non-innocent phenol–imidazole ligands and their Cu complexes

Cited by 4 publications

References 22 publications

Ultrasensitive Colorimetric and Ratiometric Detection of Cu2+: Acid–Base Properties, Complexation, and Binding Studies

Ultrasensitive Colorimetric and Ratiometric Detection of Cu2+: Acid–Base Properties, Complexation, and Binding Studies

Electrocatalytic hydrogen production and carbon dioxide conversion by earth abundant transition metal complexes of the Schiff base ligand: (E)-1-((2-dimethylamino)-propylimino)methyl)naphthalene-2-ol

Ci-Symmetry, [2 × 2] grid, square copper complex with the N4,N5-bis(4-fluorophenyl)-1H-imidazole-4,5-dicarboxamide ligand: structure, catecholase activity, magnetic properties and DFT calculations

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Ultrasensitive Colorimetric and Ratiometric Detection of Cu²⁺: Acid–Base Properties, Complexation, and Binding Studies

Ultrasensitive Colorimetric and Ratiometric Detection of Cu²⁺: Acid–Base Properties, Complexation, and Binding Studies

C_i-Symmetry, [2 × 2] grid, square copper complex with the N⁴,N⁵-bis(4-fluorophenyl)-1H-imidazole-4,5-dicarboxamide ligand: structure, catecholase activity, magnetic properties and DFT calculations