Solvent Effects on the Electrochemical Behavior of TAPD-Based Redox-Responsive Probes for Cadmium(II)

Sahli, Rihab; Bahri, Janet; Tapsoba, Issa; Boujlel, Khaled; Raouafi, Noureddine

doi:10.1155/2014/305721

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…The observed cathodic redox process in the Cd(MIPM)2Cl2 voltammogram at E 1/2 = −0.926 V is most likely due to the reduction and reoxidation of the Cd(II)/Cd(0) couple. Moreover, we notice the presence of an irreversible peak at 0.585 V. In comparison to a previous work, this peak is probably due to the oxidation of the complex Cd(MIPM) 2 Cl 2 to the radical cation. Otherwise, the electrochemical behavior of Co(MIPM) 2 Cl 2 was found to be in agreement with the literature .…”

Section: Resultssupporting

confidence: 88%

Experimental and Theoretical Investigations on Quadratic and Cubic Optical Nonlinearities of Cu(II), Co(II), Cd(II), Hg(II), Mn(II), and Zn(II) Transition Metal Coordination Complexes

Belahlou,

Karakas,

Waszkowska

et al. 2023

Crystal Growth & Design

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A series of Cu(II), Co(II), Cd(II), Hg(II), Mn(II), and Zn(II) complexes (1−6) of (1-methyl-1H-imidazol-2yl)(phenyl)methanone ligand (L) have been prepared and structurally characterized using single-crystal X-ray diffraction. A study of electrochemical properties has been conducted by cyclic voltammetry. Transition metal coordination complexes are known to have promising optical nonlinearity behavior. So, to explore the quadratic and cubic nonlinear optical (NLO) phenomena of title transition metal coordination structures, several experimental and theoretical investigations have been introduced, and their results have been evaluated. The second-harmonic generation (SHG) and third-harmonic generation (THG) techniques by means of the Maker fringe setup have been performed to analyze and evaluate the quadratic (χ (2) ) and cubic (χ (3) ) susceptibilities on thin films of 1−6 at 1064 nm. The maximum one-photon absorption (OPA) wavelengths (λ max ) of 1−6 have been measured utilizing UV−vis spectral analysis. To acquire the electric dipole moment (μ), static dipole polarizability (α), and first hyperpolarizability (β) values of 1−6, we have taken advantage of the density functional theory (DFT) at the B3LYP level. The time-dependent Hartree−Fock (TDHF) that is known as a very productive quantum mechanical procedure has been chosen to achieve the static second hyperpolarizabilities (γ) and dynamic α, β, γ, χ (2) , and χ (3) for 1−6. The measured data on the χ (2) , χ (3) , and (λ max ) results for 1−6 have been confronted with their corresponding calculated values from the TDHF approach and the configuration interaction (CI) method including all doubly occupied molecular orbitals (MOs). Our calculation results of microscopic dipole polarizabilities and hyperpolarizabilities for 1−6 have also been crosschecked with similar structures given in the previous works and outcomes of several reference samples. The second-and third-order NLO efficiencies produced theoretically and experimentally of the title materials have been outlined, revealing that the complexes with closed-shell electronic states have turned out increments of second-and thirdorder susceptibility responses. This work has also elucidated that the substitutions of metallic cations (Cu 2+ , Co 2+ , Cd 2+ , Hg 2+ , Mn 2+ , and Zn 2+ ) have created favorable impacts upon χ (2) and χ (3) conclusions. Furthermore, we have surveyed the first and second frontier MOs and their energy gap values via DFT.

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Section: Resultssupporting

confidence: 88%

Experimental and Theoretical Investigations on Quadratic and Cubic Optical Nonlinearities of Cu(II), Co(II), Cd(II), Hg(II), Mn(II), and Zn(II) Transition Metal Coordination Complexes

Belahlou,

Karakas,

Waszkowska

et al. 2023

Crystal Growth & Design

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“…The C2 ‐PMMA has an elongated conjugated and electron‐rich structure thanks to the C2 unit, and less oxidation than the different donor substituted C1 ‐based monomer . The oxidation and reduction current peaks can be due to the formation of the radical cation/anion of thiophene and furan units, respectively . The increase in the oxidation peak during the anodic scan shows that a radical cation is formed in the electron‐donating moieties such as thiophene and furan, and then the electropolymerization reaction begins.…”

Section: Resultsmentioning

confidence: 99%

Electrochromic properties of some bis‐chalcone derivatives‐based nanofibers

Maşlakcı

Biçer

Cin

et al. 2017

J of Applied Polymer Sci

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Two bis-chalcone derivatives, (2E,6E)-2,6-bis[(thiophen-2-yl)methylene]cyclohexanone (C1) and (2E,6E)-2,6-bis[(furan-2yl)methylene]cyclohexanone (C2)-based electrochromic (EC) nanofibers were produced in the presence of poly(methyl methacrylate) (PMMA) as supporting polymer using the electrospinning technique. The scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy were used to examine morphology and chemical compositions of nanofibers before and after stability test. SEM images of the obtained smooth and bead-free nanofibers before the stability test showed that both bis-chalcone derivatives were homogeneously dispersed on the surface of the electrospun nanofibers. Nanofibers of bis-chalcone derivatives were characterized with Fourier-transform infrared spectroscopy. The electrochemical and EC properties of these bis-chalcone derivatives were investigated. The C1-PMMA nanofiber-based electrochromic device (ECD) showed higher DT max (41.47%) than that of the C2-PMMA nanofiberbased ECD (4.67%) during coloration/bleaching at 715 nm. The switching times for coloration and bleaching of C1-PMMA nanofiber-based ECD were found to be 4.42 and 1.12 s, respectively, and the coloration efficiency was 136.18 cm 2 /C. Repeated cyclic voltammograms and 1000 cycles of chronoamperometric measurements of the bis-chalcone derivatives indicated that ECDs have long-term redox stability.

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“…The linear regression equation of Zn (II) ions is I p = 1.318 + 0.0736 [Zn 2+ ] (R = 0.9903 with confidence level of 95%) (I p = A) in the concentration range of 5.0 Â 10 À5 to 6.0 Â 10 À4 M and exhibit detection limit of 2.5 Â 10 À6 M. Similar to fluorescence studies, the modified BH equation was applied to determine the stoichiometry, binding constant (K a ) and change in free energy (G) of the formation of AQL-Zn (II) complex. The modified BH equation [40,41] is: redox-active ligand efficiency towards analyte complexation [42,43]. RCE represents the ratio of complex stability constants of an electroactive host in its oxidized and reduced forms (K ox /K red ) as demonstrated by Beer et.…”

Section: Voltammetric Sensing By Aqlmentioning

confidence: 99%

Highly Selective Amide-tethered 4-aminoquinoline-β-lactam Based Electrochemical Sensors for Zn (II) ion Recognition

Kamal

Raj

Kumar

et al. 2015

Electrochimica Acta

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Solvent Effects on the Electrochemical Behavior of TAPD-Based Redox-Responsive Probes for Cadmium(II)

Cited by 4 publications

References 37 publications

Experimental and Theoretical Investigations on Quadratic and Cubic Optical Nonlinearities of Cu(II), Co(II), Cd(II), Hg(II), Mn(II), and Zn(II) Transition Metal Coordination Complexes

Experimental and Theoretical Investigations on Quadratic and Cubic Optical Nonlinearities of Cu(II), Co(II), Cd(II), Hg(II), Mn(II), and Zn(II) Transition Metal Coordination Complexes

Electrochromic properties of some bis‐chalcone derivatives‐based nanofibers

Highly Selective Amide-tethered 4-aminoquinoline-β-lactam Based Electrochemical Sensors for Zn (II) ion Recognition

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