MoO2(acac)2@Fe3O4/SiO2/HPG/COSH nanostructures: novel synthesis, characterization and catalyst activity for oxidation of olefins and sulfides

Sadri, Nazanin; Abbasi, Ali

doi:10.1007/s10854-018-9301-z

Cited by 11 publications

(5 citation statements)

References 40 publications

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“…Mo-based catalyst immobilized on magnetic NPs modified with hyperbranched polyglycerol (HPG) has been reported by Sadri et al for epoxidation of alkenes and oxidation of sulfides. 224 Hyperbranched polymer was built on the Fe 3 O 4 / SiO 2 surface via repeated condensation with glycidol. A modification of OH groups with succinic anhydride and 1,2ethanedithiol led to the formation of the Fe 3 O 4 /SiO 2 /HPG/ CO-SH hybrids bearing thiol groups, which are capable of complexing with MoO 2 (acac) 2 .…”

Section: Hyperbranched Copolymer Architecturesmentioning

confidence: 99%

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Role of Polymer Structures in Catalysis by Transition Metal and Metal Oxide Nanoparticle Composites

2019

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Nanoparticle (NP)/polymer nanocomposites received considerable attention because of their important applications including catalysis. Metal and metal oxide NPs may impart catalytic properties to polymer nanocomposites, while polymers with a different structure, functionality, and architecture control the NP formation (size, shape, location, composition, etc.) and in this way, govern catalytic properties of nanocomposites. In this review we will discuss the influence of the polymer nanostructure (thin or grafted layers, polymer ordering, polymer nanopores), architecture (branched vs linear), functional groups (coordinating or ionic), specific properties (reducing, stimuli responsive, conductive), etc. on the formation of metal or metal oxide NPs and the catalytic behavior of the nanocomposites. The development of novel and efficient catalysts is crucial for progress in chemical sciences, and this explains a huge number of publications in this area in recent years. Taking into consideration previous review articles on NP/polymer catalysts, we limited this review to a discussion of a narrow temporal scope (2017–April 2019), while embracing a broad subject scope, i.e., considering any polymers and NPs which form catalytic nanocomposites. This gives us a unique view of the field of catalytic polymer nanocomposites and allows understanding of where the field is going.

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Section: Hyperbranched Copolymer Architecturesmentioning

confidence: 99%

Section: Branched Polymersmentioning

confidence: 99%

Role of Polymer Structures in Catalysis by Transition Metal and Metal Oxide Nanoparticle Composites

2019

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“…Silica coating of C-Fe 3 O 4 NPs was performed using the procedure described previously [ 20 ]. The HPG coating was applied according to the method proposed by Sadri et al [ 21 ]. The synthesis path of ethylenediamine coupling with Fe 3 O 4 –SiO 2 –HPG in the literature was realized with modifications [ 22 ].…”

Section: Methodsmentioning

confidence: 99%

Multimodal Radiobioconjugates of Magnetic Nanoparticles Labeled with 44Sc and 47Sc for Theranostic Application

et al. 2023

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This study was performed to synthesize multimodal radiopharmaceutical designed for the diagnosis and treatment of prostate cancer. To achieve this goal, superparamagnetic iron oxide (SPIO) nanoparticles were used as a platform for targeting molecule (PSMA-617) and for complexation of two scandium radionuclides, 44Sc for PET imaging and 47Sc for radionuclide therapy. TEM and XPS images showed that the Fe3O4 NPs have a uniform cubic shape and a size from 38 to 50 nm. The Fe3O4 core are surrounded by SiO2 and an organic layer. The saturation magnetization of the SPION core was 60 emu/g. However, coating the SPIONs with silica and polyglycerol reduces the magnetization significantly. The obtained bioconjugates were labeled with 44Sc and 47Sc, with a yield higher than 97%. The radiobioconjugate exhibited high affinity and cytotoxicity toward the human prostate cancer LNCaP (PSMA+) cell line, much higher than for PC-3 (PSMA-) cells. High cytotoxicity of the radiobioconjugate was confirmed by radiotoxicity studies on LNCaP 3D spheroids. In addition, the magnetic properties of the radiobioconjugate should allow for its use in guide drug delivery driven by magnetic field gradient.

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“…Silica coating of C-Fe3O4 NPs was performed using the procedure described previously [20]. The HPG coating was made according to the method proposed by Sadri et al [21]. The synthesis path of ethylenediamine coupling with Fe3O4-SiO2-HPG in the literature has been realized with modifications [22].…”

Section: Silica and Hpg Coating Of C-fe3o4 Nps And Ethylenediamine Co...mentioning

confidence: 99%

Multimodal Radiobioconjugates of Magnetic Nanoparticles Labeled with <sup>44</sup>Sc and <sup>47</sup>Sc for Theranostic Application

Ünak¹,

Yasakçı²,

Tutun³

et al. 2023

Preprint

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This study was performed to synthesize multimodal radiopharmaceutical designed for the diagnosis and treatment of prostate cancer. To achieve this goal, Super Paramagnetic Iron Oxide (SPIO) nanoparticles were used as a platform for targeting molecule (PSMA-617) and for complexation of two scandium radionuclides, 44Sc for PET imaging and 47Sc for radionuclide therapy. TEM and XPS images showed that the Fe3O4 NPs have a uniform cubic shape and a diameter from 38 to 50 nm. The Fe3O4 core are surrounded by SiO2 and an organic layer. The saturation magnetization of the SPION core was 60 emu/g. However, coating the SPIONs with silica and polyglycerol reduces the magnetization significantly. The obtained bioconjugates were labeled with 44Sc and 47Sc, with a yield higher than 97%. The radiobioconjugate exhibited high affinity and cytotoxicity towards the human prostate cancer LNCaP (PSMA+) cell line, much higher than for PC-3 (PSMA-) cells. High cytotoxicity of the radiobioconjugate was confirmed by radiotoxicity studies on LNCaP 3D-spheroids. In addition, the magnetic properties of the radiobioconjugate should allow for its use in guide drug delivery driven by magnetic field gradient.

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MoO2(acac)2@Fe3O4/SiO2/HPG/COSH nanostructures: novel synthesis, characterization and catalyst activity for oxidation of olefins and sulfides

Cited by 11 publications

References 40 publications

Role of Polymer Structures in Catalysis by Transition Metal and Metal Oxide Nanoparticle Composites

Role of Polymer Structures in Catalysis by Transition Metal and Metal Oxide Nanoparticle Composites

Multimodal Radiobioconjugates of Magnetic Nanoparticles Labeled with 44Sc and 47Sc for Theranostic Application

Multimodal Radiobioconjugates of Magnetic Nanoparticles Labeled with <sup>44</sup>Sc and <sup>47</sup>Sc for Theranostic Application

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