Electrocatalytic Activity of Cobalt Phthalocyanines Revisited: Effect of the Number of Oxygen Atoms and Conjugation to Carbon Nanomaterials

Ndebele, Nobuhle; Mgidlana, Sithi; Nyokong, Tebello

doi:10.1007/s12678-021-00670-x

Cited by 8 publications

(2 citation statements)

References 77 publications

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“…Recent studies by Keshavananda Prabhu et al [ 200 ] on a macrocyclic-based iron–Pc complex with carbon nanoparticle-doped counterpart showcased exceptional performance in terms of linear range and LOD for DA oxidation. Similarly, Nobuhle et al [ 201 ] reported efficient electrocatalytic catechol oxidation using CoPc–carbon nanomaterial conjugates. These conjugates, particularly involving single-walled carbon nanotubes, exhibited significant improvements in detection limits, sensitivity, and catalytic rate, highlighting their potential in biosensing applications.…”

Section: Electrochemical Sensing Of Biomoleculesmentioning

confidence: 99%

Macromolecule–Nanoparticle-Based Hybrid Materials for Biosensor Applications

Kuntoji,

Kousar,

Gaddimath

et al. 2024

Biosensors

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Biosensors function as sophisticated devices, converting biochemical reactions into electrical signals. Contemporary emphasis on developing biosensor devices with refined sensitivity and selectivity is critical due to their extensive functional capabilities. However, a significant challenge lies in the binding affinity of biosensors to biomolecules, requiring adept conversion and amplification of interactions into various signal modalities like electrical, optical, gravimetric, and electrochemical outputs. Overcoming challenges associated with sensitivity, detection limits, response time, reproducibility, and stability is essential for efficient biosensor creation. The central aspect of the fabrication of any biosensor is focused towards forming an effective interface between the analyte electrode which significantly influences the overall biosensor quality. Polymers and macromolecular systems are favored for their distinct properties and versatile applications. Enhancing the properties and conductivity of these systems can be achieved through incorporating nanoparticles or carbonaceous moieties. Hybrid composite materials, possessing a unique combination of attributes like advanced sensitivity, selectivity, thermal stability, mechanical flexibility, biocompatibility, and tunable electrical properties, emerge as promising candidates for biosensor applications. In addition, this approach enhances the electrochemical response, signal amplification, and stability of fabricated biosensors, contributing to their effectiveness. This review predominantly explores recent advancements in utilizing macrocyclic and macromolecular conjugated systems, such as phthalocyanines, porphyrins, polymers, etc. and their hybrids, with a specific focus on signal amplification in biosensors. It comprehensively covers synthetic strategies, properties, working mechanisms, and the potential of these systems for detecting biomolecules like glucose, hydrogen peroxide, uric acid, ascorbic acid, dopamine, cholesterol, amino acids, and cancer cells. Furthermore, this review delves into the progress made, elucidating the mechanisms responsible for signal amplification. The Conclusion addresses the challenges and future directions of macromolecule-based hybrids in biosensor applications, providing a concise overview of this evolving field. The narrative emphasizes the importance of biosensor technology advancement, illustrating the role of smart design and material enhancement in improving performance across various domains.

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Section: Electrochemical Sensing Of Biomoleculesmentioning

confidence: 99%

Macromolecule–Nanoparticle-Based Hybrid Materials for Biosensor Applications

Kuntoji,

Kousar,

Gaddimath

et al. 2024

Biosensors

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“…Монофталоцианиновые комплексы лантаноидов, благодаря наличию аксиальных лигандов, обладают высокой активностью в химических реакциях [13][14][15][16][17] и широко применяются в нелинейной оптике [18][19][20]. Активно развиваются методы получения тонких пленок фталоцианинов для нелинейной оптики и не только [21][22][23]. Тонкие пленки фталоцианина и его производных формируются различными методами: Ленгмюра-Блоджетт и Ленгмюра-Шеффера [24,25], методоми центрифугирования [26] и вакуумного напыления [27].…”

Section: Introductionunclassified

Supramolecular Organization and Optical Properties of Langmuir-Schaefer Films of 2,3,9,10,16,17,23,24-Octa-(3-(Methylthio)Phenyl)Phthalocyaninate Lutetium Acetate

Kazak¹,

Kazak²,

Nikitin³

et al. 2022

Liq. Cryst. and their Appl.

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Floating layers and Langmuir-Schaefer films of 2, 3,9,10,16,17,23,24-octa-(3-(ethylthio)phenyl)phthalocyaninate of lutetium acetate were obtained. A floating layer of this compound was modeled and the geometric characteristics of the densest packing on the water surface were calculated. It is shown that the area per one molecule in the densest face-on monolayer packing is equal to 4.94 nm 2 . Analysis of the floating layer compression isotherm, the electron absorption spectra of chloroform solution and thin films, as well as AFM images of the surface relief of Langmuir-Schaefer films showed that at the air/water interface as well as on a solid substrate, molecules are arranged by face-on type. Such organization on the aqueous subphase is probably related to the orienting effect of the acetate residue at the lutetium atom and sulfur atoms. By the method of electron absorption spectroscopy, it was found that the films contain small amount of J-type aggregates.

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The use of carbon-based nanomaterials conjugated to cobalt phthalocyanine complex in the electrochemical detection of nitrite

Ndebele

Nyokong

2023

Diamond and Related Materials

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Electrocatalytic Activity of Cobalt Phthalocyanines Revisited: Effect of the Number of Oxygen Atoms and Conjugation to Carbon Nanomaterials

Cited by 8 publications

References 77 publications

Macromolecule–Nanoparticle-Based Hybrid Materials for Biosensor Applications

Macromolecule–Nanoparticle-Based Hybrid Materials for Biosensor Applications

Supramolecular Organization and Optical Properties of Langmuir-Schaefer Films of 2,3,9,10,16,17,23,24-Octa-(3-(Methylthio)Phenyl)Phthalocyaninate Lutetium Acetate

The use of carbon-based nanomaterials conjugated to cobalt phthalocyanine complex in the electrochemical detection of nitrite

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