β‐Alanine‐functionalized magnetic graphene oxide quantum dots: an efficient and recyclable heterogeneous basic catalyst for the synthesis of 1 H ‐pyrazolo[1,2‐ b ]phthalazine‐5,10‐dione and 2,3‐dihydroquinazolin‐4(1 H )‐one derivatives

2020 ◽  
Vol 34 (10) ◽  
Author(s):  
Masoud Khaleghi Abbasabadi ◽  
Davood Azarifar
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Basic Catalyst ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Graphene Oxide Quantum Dots

Aggregation-induced enhanced photoluminescence in magnetic graphene oxide quantum dots as a fluorescence probe for As(iii) sensing

2019 ◽  
Vol 7 (14) ◽  
pp. 8510-8520 ◽  
Author(s):  
Shabnam Pathan ◽  
Misna Jalal ◽  
Sanjay Prasad ◽  
Suryasarathi Bose
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Fluorescence Probe ◽  
Graphene Quantum Dots ◽  
Contaminated Water ◽  
Magnetic Graphene Oxide ◽  
Enhanced Photoluminescence ◽  
Magnetic Graphene ◽  
Water Based ◽  
Graphene Oxide Quantum Dots

Magnetic graphene quantum dots have been designed for sensing arsenic in contaminated water based on aggregation induced photoluminescence phenomenon.

Development of A Novel System Based on Green Magnetic / Graphene Oxide / Chitosan /Allium Sativum / Quercus / Nanocomposite for Targeted Release of Doxorubicin Anti-Cancer Drug

2020 ◽  
Vol 20 (9) ◽  
pp. 1094-1104 ◽  
Author(s):  
Omid Arjmand ◽  
Mehdi Ardjmand ◽  
Ali M. Amani ◽  
Mohmmad H. Eikani
Keyword(s):  
Graphene Oxide ◽  
Allium Sativum ◽  
Cytotoxicity Assay ◽  
Targeted Treatment ◽  
Cancer Drug ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Anti Cancer ◽  
Cancerous Cells ◽  
Targeted Release

Background: Doxorubicin, as a strong anti-cancer agent for clinical treatment of various cancer types along with other drugs, is widely utilized. Due to the physiology of the human body and cancerous tissues, the applicability of doxorubicin is still limited and the targeted treatment of the different types of cancers is considered. Also, the side effects of the conventional forms of chemotherapy medicines, damaging and stressing the normal cells are considerable. Objective: This study introduces a novel and effective system for the targeted release of doxorubicin by successfully fabricating the green magnetic graphene oxide, chitosan, allium sativum, and quercus nanocomposite. Methods: The in vitro release of doxorubicin loaded on the nanocomposite was evaluated and investigated at pH 7.4 and 6.5, respectively. The drug diffusivity in the plasma environment was assessed for a more accurate analysis of the drug diffusion process. The nanocomposite loaded drug release mechanism and kinetics, as well as cytotoxicity assay was investigated. Results: The efficiency of the drug encapsulation was significantly enhanced using natural extract ingredients and consequently, the efficacy of the targeted treatment of cancerous tissues was improved. The developed nanocomposite provided a controlled release of doxorubicin in similar acidic conditions of the normal and cancerous cells and affirming that the fabricated system is thoroughly pH-dependent. Conclusion: The cytotoxicity assay confirmed that the fabricated nanocomposite at a high growth rate of cancerous cells has an anticancer property and acts as a toxic agent against tumor cells, suggesting that in conjunction with doxorubicin, it can be highly improved for killing cancerous cells.

scholarly journals Magnetization of graphene oxide nanosheets using nickel magnetic nanoparticles as a novel support for the fabrication of copper as a practical, selective, and reusable nanocatalyst in C–C and C–O coupling reactions

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 25867-25879
Author(s):  
Parisa Moradi ◽  
Maryam Hajjami
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Magnetic Nanoparticles ◽  
Coupling Reactions ◽  
Graphene Oxide Nanosheets ◽  
Magnetic Graphene Oxide ◽  
Diaryl Ethers ◽  
Magnetic Graphene

Catalytic activity of supported copper on magnetic graphene oxide was investigated as a selective and reusable nanocatalyst in the synthesis of diaryl ethers and biphenyls.

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