Rational design of large flat nitrogen-doped graphene oxide quantum dots with green-luminescence suitable for biomedical applications

Nazarkovsky, Michael; Mikhraliieva, Albina; Achete, Carlos A.; Alves, Luiz Anastácio; Araújo, Joyce R.; Archanjo, Bráulio S.; Barros, José J.; Cardoso, Liana Monteiro da Fonseca; Couceiro, J. N. S. S.; Marques, Fernanda Davi; Oliveira, Bruno; Souza, Rafael Nascimento Dias de; Teixeira, Ayla Josma; Vasconcelos, Thiago L.; Zaitsev, Vladimir

doi:10.1039/d2ra01516a

Cited by 6 publications

(1 citation statement)

References 89 publications

(112 reference statements)

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“…As such, research on green and sustainable technology and its clinical implementation is a need in the present era. 1,2 The family of carbon nanomaterials is a rapidly growing branch of novel materials with enormous promise for expansion of the scientific community. 3 Nonetheless, the synthesis of carbon nanomaterials entails the use of harmful chemical reagents, the use of fossil fuels, and high energy consumption, all of which are in opposition to green principles.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous carbon encapsulated zinc oxide nanorods derived from plant species ‘Argyreia sharadchandrajii’ for live cell imaging of drug delivery and multimodal bioactivities

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Mesoporous carbon encapsulated zinc oxide nanorods derived from plant species ‘Argyreia sharadchandrajii’ for live cell imaging of drug delivery and multimodal bioactivities

et al. 2023

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Mesoporous Nitrogen‐Doped Holey Reduced Graphene Oxide: Preparation, Purification, and Application for Metal‐Free Electrochemical Sensing of Dopamine

Mikhraliieva,

Lima,

Jost

et al. 2024

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Holey graphenic nanomaterials with porosity within the basal plane attract significant interest. It is observed that the perforation of graphene can enhance the specific surface area of the nanosheet, ensuring effective wetting and penetration of electrolytes to the electrode surface, facilitating rapid charge transfer, and boosting the electrocatalytic efficacy of the transducers. This study reports the first example of nitrogen‐doped holey reduced graphene oxide with a mesoporous morphology of the graphene basal plane (N‐MHG). It is shown that N‐MHG can be synthesized through a one‐step hydrothermal treatment of GO using NH3 and H2O2. A straightforward procedure for the purification of N‐MHG has also been developed. AFM, TEM, and Raman analyses have revealed that N‐MHG possesses a highly mesoporous network structure with a pore size ranging from 10 to 50 nm. X‐ray photoelectron spectroscopy data have indicated a partial reduction of the graphene oxide sheets during the etching process but also show a 3–5 times higher content of C═O and O–C═O fragments compared to rGO. This could account for the remarkable stability of the N‐MHG aqueous suspension. An electrochemical sensor for dopamine analysis is assembled on a glassy carbon electrode with N‐MHG/Nafion membrane and characterized by cyclic voltammetry and electrochemical impedance spectroscopy.

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Next-generation membranes for verapamil removal: Graphene oxide quantum dot-modified polyethersulfone membranes

Chiang,

Ng,

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Rational design of large flat nitrogen-doped graphene oxide quantum dots with green-luminescence suitable for biomedical applications

Abstract: This paper reveals the methodology for robust preparation of purified nitrogen-doped graphene oxide quantum dots with non-cytotoxic activity against monkey epithelial kidney cells (Vero ATCC® CCL-81™).

Cited by 6 publications

References 89 publications

Mesoporous carbon encapsulated zinc oxide nanorods derived from plant species ‘Argyreia sharadchandrajii’ for live cell imaging of drug delivery and multimodal bioactivities

Mesoporous carbon encapsulated zinc oxide nanorods derived from plant species ‘Argyreia sharadchandrajii’ for live cell imaging of drug delivery and multimodal bioactivities

Mesoporous Nitrogen‐Doped Holey Reduced Graphene Oxide: Preparation, Purification, and Application for Metal‐Free Electrochemical Sensing of Dopamine

Next-generation membranes for verapamil removal: Graphene oxide quantum dot-modified polyethersulfone membranes

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