The comparison of capacitor behaviors of polymethylcarbazole and polymethylcarbazole/graphene

Ateş, Murat; Özten, Esin

doi:10.1016/j.jallcom.2017.04.221

Cited by 13 publications

(6 citation statements)

References 57 publications

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“…SEM analysis of RGO showed a wrinkled structure. Exfoliated RGO formed a crumpled structure . EDS analysis of RGO in Figure c showed the elemental composition for carbon (90%) and oxygen (10%).…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Mn-TPP/RGO Tailored Glassy Carbon Electrode for Doxorubicin Sensing

Zafar,

Bukhari,

Nasir

2024

ACS Omega

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Cancer is a long-standing disease, and the use of anticancer drugs can cause many different harmful side effects. Therefore, the quantitative analysis of anticancer drugs is crucial. Among all the analytical techniques that have been utilized for the detection of doxorubicin, electrochemical sensors have drawn exceptional consideration because they are simple, affordable, and highly sensitive. Manganese tetraphenylporphyrin decorated reduced graphene oxide (Mn-TPP/RGO), tetraphenylporphyrin decorated reduced graphene oxide (TPP/RGO), and reduced graphene oxide (RGO) nanostructure based glassy carbon electrodes (GCEs) were fabricated for the detection of doxorubicin (DOX). The synthesized materials were characterized by FTIR, scanning electron microscopy (SEM), ultraviolet−visible spectroscopy (UV/vis), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). Doxorubicin detection was performed using differential pulse voltammetry (DPV), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Among the prepared electrodes, Mn-TPP/RGO modified GCE gave an optimum peak current at pH 3. The Mn-TPP/RGO modified electrode showed significant linear response range (0.1−0.6 mM); effective sensitivity (112.09 μA mM −1 cm −2 ); low detection limit (63.5 μM); and excellent stability, selectivity, repeatability, and reproducibility toward doxorubicin. With differential pulse voltammetry, LoD and sensitivity were 27 μM and 0.174 μA μM −1 cm −2 , respectively. Real sample analysis was also performed in human serum, and it depicted reasonable recovery results for spiked doxorubicin.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Mn-TPP/RGO Tailored Glassy Carbon Electrode for Doxorubicin Sensing

Zafar,

Bukhari,

Nasir

2024

ACS Omega

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“…This limited positive region stability was potentially caused by the minimal amount of possible delocalization of positive charges across the small dicarbazole donor unit as poly(carbazole) derivatives have shown excellent cycling stabilities in previous reports. 28,30,31 We hypothesized that we could improve the stability of the donor−node−acceptor structure by using an extended πconjugated polymer donor unit. Herein, we report the synthesis of a 3,4-ethylenedioxythiophene (EDOT)-functionalized tetrachlorinated PDI monomer.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Contrary to most ambipolar polymers, the donor–node–acceptor network polymer synthesized by Qin et al demonstrated remarkable negative region stability of 89% capacity retention after 1000 cycles but limited positive region stability. This limited positive region stability was potentially caused by the minimal amount of possible delocalization of positive charges across the small dicarbazole donor unit as poly(carbazole) derivatives have shown excellent cycling stabilities in previous reports. ,, …”

Section: Introductionmentioning

confidence: 99%

Ambipolar Poly(3,4-ethylenedioxythiophene)-Pendant Tetrachlorinated Perylene Diimide for Symmetric Supercapacitors

Miltenburg

Obhi

et al. 2020

ACS Appl. Polym. Mater.

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Pseudocapacitive polymers offer potential for higher energy densities than electrostatic double-layer capacitive materials and lower cost than pseudocapacitive metal oxides. These polymers typically demonstrate good stability when storing positive charges but poor stability when storing negative charges. The power and energy densities of these materials are also limited when the operating voltage window is restricted to positive voltages. The development of polymers capable of stable positive and negative charge storage is necessary to allow a wider voltage window and create high performance polymer supercapacitors. Here, we present a poly(3,4-ethylenedioxythiophene)-pendant tetrachlorinated perylene diimide polymer capable of storing positive and negative charges, which utilizes a donor–node–acceptor architecture to prevent electronic interactions between positive and negative charge storing units. The polymer films show balanced charge storage and excellent stability in both positive and negative charge storage, retaining more than 80% of their capacitance over 1000 cycles. The films demonstrate moderate capacitances of 78.6 F g–1 in the positive region and 73.1 F g–1 in the negative region at 0.5 A g–1, as well as excellent rate capabilities in positive and negative charge storage regions of 87 and 56% at 20 A g–1, respectively. The polymer film was applied as both electrodes in a symmetric type III supercapacitor device with a gel polymer electrolyte, demonstrating a wide operating potential range of 2.2 V. These results demonstrate that the cycling stability of ambipolar polymers can be improved using a donor–node–acceptor polymer architecture with an extended π-conjugated donor unit.

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“…This limited positive region stability was potentially caused by the minimal amount of possible delocalization of positive charge across the small dicarbazole donor unit, as poly(carbazole) derivatives have shown excellent cycling stabilities in previous reports. 29,30 We hypothesized that we could improve the stability of the donor-node-acceptor structure by using an extended πconjugated polymer donor unit. Herein we report the synthesis of a 3,4-ethylenedioxythiophene (EDOT)-functionalized tetrachlorinated perylene diimide monomer.…”

Section: Introductionmentioning

confidence: 99%

Ambipolar PEDOT-Pendant Tetrachlorinated Perylene Diimide for Symmetric Supercapacitors

Miltenburg

Obhi²,

McAllister³

et al. 2020

Preprint

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Pseudocapacitive polymers offer potential for higher energy densities than electrostatic double layer capacitive materials and lower cost than pseudocapacitive metal oxides. These polymers typically demonstrate good stability when storing positive charge but poor stability when storing negative charge. The power and energy densities of these materials is also limited when the operating voltage window is restricted to positive voltages. The development of polymers capable of stable positive and negative charge storage is necessary to allow a wider voltage window and create high performance polymer supercapacitors. Here we present a PEDOT-pendant tetrachlorinated perylene diimide polymer capable of storing positive and negative charge, which utilizes a donor-nodeacceptor architecture to prevent electronic interaction between positive and negative charge storing units. The polymer films show balanced charge storage and excellent stability in both positive and negative charge storage, retaining more than 80% of their capacitance over 1000 cycles. The films demonstrate moderate capacitances of 78.6 F g-1 in the positive region and 73.1 F g-1 in the negative region at 0.5 A g-1, as well as excellent rate capabilities in positive and negative charge storage regions of 87% and 56% at 20 A g-1, respectively. The polymer film was applied as both electrodes in a symmetric type III supercapacitor device with a gel polymer electrolyte, demonstrating a wide operating potential range of 2.2 V. These results demonstrate that the cycling stability of ambipolar polymers can be improved using a donor-node-acceptor polymer architecture with an extended π-conjugated donor unit.

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The comparison of capacitor behaviors of polymethylcarbazole and polymethylcarbazole/graphene

Cited by 13 publications

References 57 publications

Fabrication of Mn-TPP/RGO Tailored Glassy Carbon Electrode for Doxorubicin Sensing

Fabrication of Mn-TPP/RGO Tailored Glassy Carbon Electrode for Doxorubicin Sensing

Ambipolar Poly(3,4-ethylenedioxythiophene)-Pendant Tetrachlorinated Perylene Diimide for Symmetric Supercapacitors

Ambipolar PEDOT-Pendant Tetrachlorinated Perylene Diimide for Symmetric Supercapacitors

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