Electrochemical Behavior of Chalcone at a Glassy Carbon Electrode and Its Analytical Applications

Naik, Keerti M.; Nandibewoor, Sharanappa T.

doi:10.4236/ajac.2012.39086

Cited by 15 publications

(6 citation statements)

References 16 publications

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“…These results are supported by previous studies describing on similar form of molecular structures where the heterocyclic substitutions on the molecular structure cause changes in the electronic structure of these materials . In conclusion, the electrochemical behavior of C1 ‐PMMA and C2 ‐PMMA exhibited ideal characteristics for potential of the fabrication of ECDs compared to previous studies …”

Section: Resultssupporting

confidence: 88%

“…In general, such reactions can be electronically tuned to produce a variety of colors through control of the extant π‐conjugation. Although there have been some studies (pharmacological and biological activity studies and electrochemical studies, and so on) of the bis‐chalcone derivatives due to their multifunctional characteristics, studies on optical and EC properties are scarce . Therefore, organic hybrid polymers such as bis‐chalcone and its derivatives, which can exhibit color change, might be suitable for the fabrication of ECDs …”

Section: Introductionmentioning

confidence: 73%

“…The electrochemical studies exhibited that the C2 ‐PMMA has lower electroactivity than those of the C1 ‐PMMA. This can be explained principally by the strong electron attracting effect of substituted thiophene and furan groups, present in the tested C1‐ and C2 ‐based nanofibers . 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 .…”

Section: Resultsmentioning

confidence: 97%

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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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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Electrochromic properties of some bis‐chalcone derivatives‐based nanofibers

Maşlakcı

Biçer

Cin

et al. 2017

J of Applied Polymer Sci

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“…This phenomenon can be attributed to the consumption of absorbed ligand (and/or its oxidation product) on the electrode surface. 44 In the return scan, a reduction peak is observed only for 2-qtpy and 4-stpy, that is it can be assigned to an electrochemical reduction of L *+ or L + .…”

Section: Electrochemical Behaviourmentioning

confidence: 94%

Influence of structural changes on photophysical properties of terpyridine derivates: Experimental studies and theoretical calculations

Toledo

Brovelli

Soto‐Delgado

et al. 2018

Journal of Molecular Structure

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International audienceFour terpyridine ligands containing different aryl substituents 4'-(4-quinolinyl)-3,2':6′,3″-terpyridine (3-qtpy), 4'-(4-quinolinyl)-2,2':6′,2″-terpyridine (2-qtpy), 4'-(3-methyl-2-thienyl)-4,2':6′,4″-terpyridine (4-stpy) and 4'-(3-methyl-2-thienyl)-2,2':6′,2″-terpyridine (2-stpy) were synthesized in a one-pot procedure and characterized by elemental analysis, FT-IR and 1H- and 13C NMR spectroscopy. Additionally, the 2-stpy structure was confirmed by single crystal X-ray diffraction analysis. The influence of the N-position in the tpy and aryl substituents on the photophysical properties was systematically investigated by spectroscopic methods and simulated by density functional theory (DFT and TD-DFT) calculations. Thermal stability was observed until about 280 °C, making these kind of ligands interesting candidates for their use as complex ligands, which are obtained by solvothermal synthesis under temperatures of about 180 °C. The electrochemical behavior was also investigated. All molecules show irreversible anodic and cathodic voltammetric peaks in organic medium

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“…Although their electrochemical reduction has been well studied [17][18][19][20], few researches have been devoted to the anodic oxidation of chalcones [21][22][23][24]. Flavones and flavanonols have been described as the resulting compounds of the anodic oxidations of 2 0 -hydroxychalcones [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The anodic reactivity of 4,4′-dimethoxychalcone: a synthetic and mechanistic investigation

et al. 2016

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The anodic oxidation of the 4,4 0 -dimethoxychalcone (DMC) was investigated by different electrochemical methods at a platinum working electrode and in acetonitrile as a solvent. The DMC exhibited a single irreversible anodic peak around 1.6 V versus Ag/AgCl. On the time scale of cyclic voltammetry experiments, the highly reactive radical cation issued from the first electron transfer underwent a second order rate-limiting reaction. The potential imposed electrolyses of DMC led to the formation of a semi-conducting oligomer with 40 % yield. Using different physico-chemicals methods, the structural study confirmed the formation of an o-phenylenevinylene oligomer. The values of the corresponding optical and electrochemical band gaps were calculated to be 3.15 and 2.86 eV, respectively. Finally, a mechanism for the DMC electro-oligomerization was proposed on the basis of the obtained results.

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Electrochemical Behavior of Chalcone at a Glassy Carbon Electrode and Its Analytical Applications

Cited by 15 publications

References 16 publications

Electrochromic properties of some bis‐chalcone derivatives‐based nanofibers

Electrochromic properties of some bis‐chalcone derivatives‐based nanofibers

Influence of structural changes on photophysical properties of terpyridine derivates: Experimental studies and theoretical calculations

The anodic reactivity of 4,4′-dimethoxychalcone: a synthetic and mechanistic investigation

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