Impact of dendritic polymers on nanomaterials

Soleyman, Rouhollah; Adeli, Mohsen

doi:10.1039/c4py01208a

Cited by 37 publications

(28 citation statements)

References 135 publications

(142 reference statements)

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“…Several common solvents were tested for the Mizoroki-Heck cross-coupling reaction in the presence of MNP@PAMAM-Co to access the best optimal conditions ( Table 2, entries 13, [15][16][17][18][19][20]. This reaction proceeded in higher yields, more cleanly and faster when the reactions were conducted in a mixture of DMF and H 2 O in 1:1 ratio as solvent.…”

Section: Effect Of Solventmentioning

confidence: 99%

“…So, to overcome these limitations, designing and applying a novel catalyst is required. [16,17] Attaching functional groups, such as hydroxyl, carboxyl and amine as terminal groups of the dendrimers can result in a considerable enhancement in binding capacity to a diversity of ions. For example, carbon nanotubes, despite having unique features, [7,12] are known to be hazardous to the environment.…”

Section: Introductionmentioning

confidence: 99%

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Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

Arghan

Koukabi

Kolvari

2019

Applied Organom Chemis

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Funding information Semnan UniversityPolyamidoamine (PAMAM) is one of the most interesting types of hyperbranched polymers that carry a large number of amino groups on its surface. PAMAM has gained significant attention from synthetic organic chemists due to its structural characteristics, controllable structure, inner porosity, and ability to trap a wide range of ions and molecules. So, in this work, the PAMAM dendrimer was synthesized, grafted onto the surface of magnetite nanoparticles, and the resulting hybrid nanoparticles were then employed as suitable host for immobilizing cobalt nanoparticles. The newly developed catalyst was well characterized by Fourier transform-infrared, X-ray diffraction, thermogravimetric analysis, field emission-scanning electron microscopy, transmission electron microscopy, atomic absorption spectroscopy, element mapping and energy-dispersive X-ray analysis. The efficiency of the as-prepared nanocatalyst was evaluated for the Mizoroki-Heck crosscoupling reactions. The MNP@PAMAM-Co represented perfect catalytic efficiency and high selectivity for the Mizoroki-Heck cross-coupling reaction compared with previously reported catalysts. The catalyst separation from the reaction mixture was easily achieved with the assistance of an external magnetic field, and its recycling was also investigated for five consecutive runs. Hot filtration confirmed no leaching of the active metal during the Heck coupling.

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Section: Effect Of Solventmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

Arghan

Koukabi

Kolvari

2019

Applied Organom Chemis

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“…Other studies have demonstrated that covalent functionalization of Gs with adequate organic units can improve G dispersability in different solvents minimizing restacking and rendering more persistent suspensions. Table compiles those reports in which covalent modification of Gs has been performed for the sake of better dispersability among other properties …”

Section: Miscellaneous Applicationsmentioning

confidence: 99%

“…Table 8c ompiles those reports in which covalentmodification of Gs has been performed for the sake of better dispersability among other properties. [245] Other uses of covalently modified Gs expand to very diverse fields going from adsorbents for CO 2 capture, [257] adsorption of dyes from water [258] or oil spill cleanup, [259] drug delivery, [260] development of non-volatile memory devices, [261] sensing applications including aptasensors, [262] electrical, [263] electrochemical or opticals ensors [263] or impedimetric biosensing, [264] among others. [265]…”

Section: Miscellaneous Applicationsmentioning

confidence: 99%

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Navalón

Herance

Álvaro

et al. 2017

Chemistry A European J

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The ideal graphene is a one-atom thick single layer of carbon atoms having sp hybridation in hexagonal arrangement. Due to their large surface area and good dispersability in common solvents, graphenes are suitable platforms to anchor covalently units. The appended unit can introduce additional functionality to graphene. Although the field of covalently modified graphene is still starting compared to the development of other carbon nanoforms, there is already many examples describing the use of modified graphenes as recoverable photo-, electrocatalysts as well as in non-linear optics and to improve mechanical resistance and solubility of graphenes. In this Review, the state of the art of covalently modified graphenes for these applications is reviewed. After some general sections describing properties and characterization techniques of graphenes relevant to their use as supports and those general reactions and starting substrates to obtain the modified graphene conjugates, the main body of the review describes the preparation and properties of covalently modified graphene depending on their use as catalyst, photocatalyst, photoresponsive material, non-linear optics, electrocatalyst and other uses. The last section of the review summarizes the main achievements of the field and what should be according to our view the future developments.

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“…In order to overcome these barriers, it has been found that targeted, rational engineering to the dendrimer structure and their hybridization with other nanocarriers can be viable methods for controlling their biological interactions. (15) Some of these have included surface modifications, preparation of Janus, or two-faced dendrimers, alterations of the molecular architecture by integrating linear polymers, and hybridization with other NPs. This review will provide a comprehensive overview of these designs, focusing on the rational design and tweaking of dendritic nanomaterials to control their nano-bio interactions and tumor targeting behaviors.…”

Section: 0 Introductionmentioning

confidence: 99%

Tweaking dendrimers and dendritic nanoparticles for controlled nano-bio interactions: potential nanocarriers for improved cancer targeting

Bugno

Hsu

Hong

2015

Journal of Drug Targeting

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Nanoparticles have shown great promise in the treatment of cancer, with a demonstrated potential in targeted drug delivery. Among a myriad of nanocarriers that have been recently developed, dendrimers have attracted a great deal of scientific interests due to their unique chemical and structural properties that allow for precise engineering of their characteristics. Despite this, the clinical translation of dendrimers has been hindered due to their drawbacks, such as scale-up issues, rapid systemic elimination, inefficient tumor accumulation, and limited drug loading. In order to overcome these limitations, a series of reengineered dendrimers have been recently introduced using various approaches, including: i) modifications of structure and surfaces; ii) integration with linear polymers; and iii) hybridization with other types of nanocarriers. Chemical modifications and surface engineering have tailored dendrimers to improve their pharmacokinetics and tissue permeation. Copolymerization of dendritic polymers with linear polymers has resulted in various amphiphilic copolymers with self-assembly capabilities and improved drug loading efficiencies. Hybridization with other nanocarriers integrates advantageous characteristics of both systems, which includes prolonged plasma circulation times and enhanced tumor targeting. This review provides a comprehensive summary of the newly emerging drug delivery systems that involve reengineering of dendrimers in an effort to precisely control their nano-bio interactions, mitigating their inherent weaknesses.

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Impact of dendritic polymers on nanomaterials

Abstract: Primary/secondary covalent/non-covalent interactions between dendritic polymers and nanomaterials can change the physicochemical properties, such as shape, of the obtained hybrid nanomaterials.

Cited by 37 publications

References 135 publications

Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

Covalently Modified Graphenes in Catalysis, Electrocatalysis and Photoresponsive Materials

Tweaking dendrimers and dendritic nanoparticles for controlled nano-bio interactions: potential nanocarriers for improved cancer targeting

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