Hybrid magneto-luminescent iron oxide nanocubes functionalized with europium complexes: synthesis, hemolytic properties and protein corona formation

Abstract

The use of hybrid nanostructures based on magneto-luminescent properties is a promising strategy for nano-bio applications and theranostics platforms . In this work, we carried out the synthesis and functionalization...

Efficient Magneto-Luminescent Nanosystems based on Rhodamine-Loaded Magnetite Nanoparticles with Optimized Heating Power and Ideal Thermosensitive Fluorescence

“…Avoiding agglomeration effects is also of utmost importance when using organic luminophores because the self-aggregation-mediated quenching can largely restrict the luminophores’ practical application. , In addition, the close proximity between luminophores and iron oxide cores leads to a strong emission quenching due to the large UV–vis absorption and scattering of Fe 3 O 4 NPs, and these aggregation effects become more critical as the size of the MNPs increases . Since organic dyes are more sensitive to aggregation and scattering effects, they have started to be replaced by quantum dots and lanthanide complexes in the fabrication of fluorescent nanocomposites, , but at the expense of major toxicity. Therefore, the incorporation of magnetic and optical moieties into a common nanosystem that holds out high biocompatibility, optimal hyperthermia performance, and efficient photoluminescence remains a challenge.…”

Facile Synthesis of Hollow MnO2 Nanoparticles for Reactive Oxygen Species Scavenging in Osteoarthritis

“…Nanomaterials have developed rapidly in the past decades and applied widely in medical fields due to their excellent biocompatibility and nanoenzyme and drug delivery ability. − MnO 2 has recently attracted huge attention as a unique tumor microenvironment-responsive therapeutic drug. − MnO 2 could be H + or glutathione (GSH) responsive or generate Mn 2+ ions in the tumor microenvironment, which enhanced the contrast of T 1 magnetic resonance (MR) imaging tumor-specific imaging and detection obviously. − At the same time, MnO 2 can trigger the decomposition of hydrogen peroxide (H 2 O 2 ) in the tumor microenvironment, alleviating the tumor hypoxia and oxidative stresses, which is beneficial for reducing drug resistance. − Besides, MnO 2 has no long-term toxicity to different tissues because it is excreted by the kidneys quickly. However, there are still few reports on the relationship between the scavenge ROS ability of MnO 2 towards OA.…”

Aplicação De Nanopartículas Metálicas E Bimetalicas Em Fotocatálise

“…devido às suas propriedades únicas que diferem dos materiais bulk e as suas elevadas potencialidades para serem utilizadas no desenvolvimento de novas tecnologias. No regime nanométrico, as propriedades magnéticas, ópticas, catalíticas e de transporte de cargas energéticas dos materiais dependem fortemente da sua morfologia, isto é, do tamanho e forma devido à elevada relação superfície/volume e as propriedades eletrônicas únicas(COSTA et al, 2021;ZANCHET, 2017;KHAN et al, 2018;LIMA et al, 2020;TANCREDI et al, 2019).Enquanto os efeitos de tamanho foram intensivamente estudados nas últimas décadas(TANCREDI et al, 2019), a dependência com a forma passou a ser explorada apenas recentemente, devido à dificuldade intrínseca de produzir nanoestruturas com formas bem definidas e em grandes quantidades. No entanto, nos últimos anos, o aprimoramento de métodos de produção, em especial a síntese coloidal de NPs, propiciou a produção de amostras de alta qualidade, motivando o estudo experimental sistemático dos efeitos de forma e o desenvolvimento de novas aplicações (RODRIGUES; DA SILVA; CAMARGO, 2019).…”