Supercapacitive properties of carbazole-containing cobalt(<scp>ii</scp>) phthalocyanines/reduced graphene oxide composites

Yenilmez, Hacer Yasemin; Budak, Özlem; Öztürk, Nazlı Farajzadeh; Koca, Atıf; Boz, Almila; Ustamehmetoğlu, Belkıs; Altuntaş Bayır, Zehra

doi:10.1039/d3dt03602b

Cited by 6 publications

(2 citation statements)

References 86 publications

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“…The resultant cobalt(II) phthalocyanine-reduced graphene oxide nanocomposites demonstrated higher supercapacitive performance compared with the cobalt(II) phthalocyanines and reduced graphene oxide nanosheets. 15 Additionally, there are few studies reporting the biological properties of phthalocyanine/graphene oxidebased nanocomposites. Erden used a new tetra-substituted zinc(II) phthalocyanine bearing cholesterol groups (Chol-ZnPc) on peripheral positions for the surficial modification of graphene oxide nanosheets.…”

Section: ■ Introductionmentioning

confidence: 99%

“…All of the phthalocyanines were used for the modification of reduced graphene oxide nanosheets. The resultant cobalt(II) phthalocyanine-reduced graphene oxide nanocomposites demonstrated higher supercapacitive performance compared with the cobalt(II) phthalocyanines and reduced graphene oxide nanosheets . Additionally, there are few studies reporting the biological properties of phthalocyanine/graphene oxide-based nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

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Biological Performance of Hexadeca-Substituted Metal Phthalocyanine/Reduced Graphene Oxide Nanobioagents

Farajzadeh Öztürk,

Özdemir,

Yalçın

et al. 2024

ACS Appl. Bio Mater.

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This study presents a tetra-substituted phthalonitrile derivative, namely, diethyl 2-(3,4dicyano-2,5-bis(hexyloxy)-6-(4-(trifluoromethoxy)phenoxy)phenyl)malonate (a), cyclotetramerizing in the presence of some metal salts. The resultant hexadeca-substituted metal phthalocyanines [M= Co, Zn, InCl)] (b−d) were used for the modification of reduced graphene oxide for the first time. The effect of the phthalonitrile/metal phthalocyanines on biological features of reduced graphene oxide (rGO) was extensively examined by the investigation of antioxidant, antimicrobial, DNA cleavage, cell viability, and antibiofilm activities of nanobioagents (1−4). The results were compared with those of unmodified rGO (nanobioagent 5), as well. Modification of reduced graphene oxide with the synthesized compounds improved its antioxidant activity. The antioxidant activities of all the tested nanobioagents also enhanced as the concentration increased. The antibacterial activities of all the nanobioagents improved by applying the photodynamic therapeutic (PDT) method. All the phthalonitrile/phthalocyanine-based nanobioagents (especially phthalocyanine-based nanocomposites) exhibited DNA cleavage activities, and complete DNA fragmentation was observed for nanobioagents (1−4) at 200 mg/L. They can be used as potent antimicrobial and antimicrobial photodynamic therapy agents as well as Escherichia coli microbial cell inhibitors. As a result, the prepared nanocomposites can be considered promising candidates for biomedicine.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biological Performance of Hexadeca-Substituted Metal Phthalocyanine/Reduced Graphene Oxide Nanobioagents

Farajzadeh Öztürk,

Özdemir,

Yalçın

et al. 2024

ACS Appl. Bio Mater.

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Electrochemical Evaluation of Redox Active Cobalt‐Oxyquinolinate Complex Layered on Reduced Graphene Oxide for Hybrid Supercapacitor Application

Pandimadevi Lishavi,

Thameem Ansari,

Karthick Raja

et al. 2024

Applied Organom Chemis

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The redox active organometallic compounds are the prominent supercapacitor electrode materials due to the attractive properties like stable redox scheme, good electron transfer mediator, and low oxidation potential. The key advantage of the organometallic compounds is that the electronic property of the electrode can be modified by altering and functionalizing the ligands around the metal atom. In this work, we synthesized cobalt‐oxyquinolinate (Co‐Q) organometallic compound by solvothermal method. To improve the electrical conductivity, the reduced graphene oxide (RGO) is grafted on Co‐Q. The electrochemical behaviour of Co‐Q is improved by the addition of RGO. The specific capacitance of Co‐Q layered on RGO is greater (1206 mF cm−2) than Co‐Q (670 mF cm−2) at current density of 1 mA cm−2. This is due to the increase in active sites after the incorporation of RGO on Co‐Q; further, this promotes the diffusion process. The fundamental electrochemical analyses, including cyclic voltammetry, galvanostatic charge–discharge analysis, and electrochemical impedance analysis, provided the information about the electrochemical energy storage performance. Dunn's method is used to understand the diffusion and capacitive contributions of the electrode material during energy storage. From the electrochemical analysis, Co‐Q layered on RGO is a suitable material for the energy storage application due to its high diffusion and stability.

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Electrodeposition of Manganese (III) Phthalocyanine/ Reduced Graphene Oxide for Asymmetric Supercapacitor Devices

Yenilmez,

Farajzadeh Öztürk,

Budak

et al. 2024

Chemistry An Asian Journal

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In this study, two novel tetra‐substituted manganese (III) phthalocyanines bearing 9H‐Carbazol‐2‐yloxy groups on peripheral or non‐peripheral positions were prepared and used for modification of reduced graphene oxide by applying a simple one‐step electrodeposition technique for the first time. The manganese (III) phthalocyanines (1 and 2) were electropolymerized and graphene oxide was electrochemically converted into reduced graphene oxide simultaneously. Subsequently, an rGO‐MnPc hybrid structure was formed directly on the NiF electrode (substrate) via layer‐by‐layer assembly. Additionally, the effect of substituent position on the charge storage capacity of the prepared hybrid capacitive candidates was investigated. The fabricated hybrid electrodes exhibited remarkable electrochemical performance due to the combination of manganese (III) phthalocyanines and reduced graphene oxide. The NiF/rGO2‐2 electrode exhibited the highest specific capacitance (512.4 F g‐1) at 0.5 A g‐1 and the remained specific capacitance was obtained 88.1% after 5000 consecutive charge‐discharge cycles. An asymmetric supercapacitor (ASC) was constructed from rGO2‐2 as the positive electrode and rGO as the negative electrode with a working potential of 1.5 V. The as‐prepared device delivered a specific energy of 17.4 Wh kg−1 at 350 W kg−1. Hence, manganese (III) phthalocyanine‐reduced graphene oxide electrodes can be considered outstanding materials for energy storage applications in the future.

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Supercapacitive properties of carbazole-containing cobalt(ii) phthalocyanines/reduced graphene oxide composites

Abstract: This study aims to compare the effect of substituents (position and number) and reduced graphene oxide on the supercapacitive properties of cobalt phthalocyanines. For this purpose, three new tetra- and...

Cited by 6 publications

References 86 publications

Biological Performance of Hexadeca-Substituted Metal Phthalocyanine/Reduced Graphene Oxide Nanobioagents

Biological Performance of Hexadeca-Substituted Metal Phthalocyanine/Reduced Graphene Oxide Nanobioagents

Electrochemical Evaluation of Redox Active Cobalt‐Oxyquinolinate Complex Layered on Reduced Graphene Oxide for Hybrid Supercapacitor Application

Electrodeposition of Manganese (III) Phthalocyanine/ Reduced Graphene Oxide for Asymmetric Supercapacitor Devices

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