Small is Beautiful: Challenges and Perspectives of Nano/Meso/Microscience

Antonietti, Markus

doi:10.1002/smll.201502287

Cited by 10 publications

(6 citation statements)

References 56 publications

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“…For the past few years, nanotechnology has acquired marvelous impetus by creating new scientific ideas in this rapidly growing technological era [ 1 , 2 ]. Nanomaterials have revealed many technological insights with their tremendous applications and specific properties [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Biogenic Synthesis of NiO Nanoparticles Using Areca catechu Leaf Extract and Their Antidiabetic and Cytotoxic Effects

Shwetha¹,

R²,

Kiran³

et al. 2021

Molecules

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Nanoworld is an attractive sphere with the potential to explore novel nanomaterials with valuable applications in medicinal science. Herein, we report an efficient and ecofriendly approach for the synthesis of Nickel oxide nanoparticles (NiO NPs) via a solution combustion method using Areca catechu leaf extract. As-prepared NiO NPs were characterized using various analytical tools such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-Visible spectroscopy (UV-Vis). XRD analysis illustrates that synthesized NiO NPs are hexagonal structured crystallites with an average size of 5.46 nm and a hexagonal-shaped morphology with slight agglomeration. The morphology, size, and shape of the obtained material was further confirmed using SEM and TEM analysis. In addition, as-prepared NiO NPs have shown potential antidiabetic and anticancer properties. Our results suggest that the inhibition of α-amylase enzyme with IC 50 value 268.13 µg/mL may be one of the feasible ways through which the NiO NPs exert their hypoglycemic effect. Furthermore, cytotoxic activity performed using NiO NPs exhibited against human lung cancer cell line (A549) proved that the prepared NiO NPs have significant anticancer activity with 93.349 μg/mL at 50% inhibition concentration. The biological assay results revealed that NiO NPs exhibited significant cytotoxicity against human lung cancer cell line (A549) in a dose-dependent manner from 0–100 μg/mL, showing considerable cell viability. Further, the systematic approach deliberates the NiO NPs as a function of phenolic extracts of A. catechu with vast potential for many biological and biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Biogenic Synthesis of NiO Nanoparticles Using Areca catechu Leaf Extract and Their Antidiabetic and Cytotoxic Effects

Shwetha¹,

R²,

Kiran³

et al. 2021

Molecules

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“…A common scheme for biological nanoreactors is the incorporation of catalysts in pockets to protect the active site from cross-reactions or harmful reagents, and to channel the substrate towards the catalyst and products away from it. Inspired by these properties, chemists and materials scientists have invested immense efforts to create building blocks for self-assembled nanostructures with advanced functionality and precise composition [ 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Synthetic chemistry has access to a broad range of materials properties to mimic biological nanoreactors on a basic level, but also to devise entirely new systems that are more robust, responsive, and tailored to application needs [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Synthesis and Application of Polymer Compartments for Catalysis

et al. 2020

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Catalysis is one of the most important processes in nature, science, and technology, that enables the energy efficient synthesis of essential organic compounds, pharmaceutically active substances, and molecular energy sources. In nature, catalytic reactions typically occur in aqueous environments involving multiple catalytic sites. To prevent the deactivation of catalysts in water or avoid unwanted cross-reactions, catalysts are often site-isolated in nanopockets or separately stored in compartments. These concepts have inspired the design of a range of synthetic nanoreactors that allow otherwise unfeasible catalytic reactions in aqueous environments. Since the field of nanoreactors is evolving rapidly, we here summarize—from a personal perspective—prominent and recent examples for polymer nanoreactors with emphasis on their synthesis and their ability to catalyze reactions in dispersion. Examples comprise the incorporation of catalytic sites into hydrophobic nanodomains of single chain polymer nanoparticles, molecular polymer nanoparticles, and block copolymer micelles and vesicles. We focus on catalytic reactions mediated by transition metal and organocatalysts, and the separate storage of multiple catalysts for one-pot cascade reactions. Efforts devoted to the field of nanoreactors are relevant for catalytic chemistry and nanotechnology, as well as the synthesis of pharmaceutical and natural compounds. Optimized nanoreactors will aid in the development of more potent catalytic systems for green and fast reaction sequences contributing to sustainable chemistry by reducing waste of solvents, reagents, and energy.

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“…Nanotechnology has gained marvellous impetus in today's rapidly emerging technological era by generating a wealth of scientific concepts to tackle with daily challenges of developing technology [1]. The nanomaterials have been proved to possess countless applications and physicochemical properties [2,3] which are exerted due to their characteristic size, shape, area and surface chemistry [4].…”

Section: Introductionmentioning

confidence: 99%

Calotropis gigantea assisted green synthesis of nanomaterials and their applications: a review

Patil

2020

Beni-Suef Univ J Basic Appl Sci

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Background: Nanotechnology has been receiving wonderful impetus in the current emerging technological era by opening a pool of scientific ideas to compete with the daily challenges of developing technology. So far, numerous properties and countless applications of nanomaterials have been explored which have been even proved to be based on characteristic shape, size, surface area and surface chemistry. Main content: By the time, several attempts have been made for green synthesis of nanomaterials, using plant extracts. Calotropis gigantiea (L.) R. Br is the plant belonging to Apocynaceae, have been screened and proved to possess various pharmacological activities, due to different polar phytochemicals like flavonoids, lignans and terpenoids. This review focus on phytochemicals so far reported from different parts of the plant; pharmacological activities exhibited; green synthesis of nanomaterials, particularly metallic nanoparticles green synthesised by facilitating reaction of metallic ion donor molecule/salt and aqueous extract of leaves or flowers of C. gigantiea and their biological or non-biological applications. The use of C. gigantea in the fabrication of nanomaterials is an ecofriendly and safe approach. Secondary metabolites present act as a stabilizing agent for nanomaterials. Cadmium sulphide, titanium dioxide, nickel and nickel oxide nanoparticles synthesised using C. gigantea exerted better antimicrobial action, compared to extracts. Nanoencapsulated magnesium oxide nanoparticles avoided biochemical degradation of MgO; increase its bioavailability and proved beneficial in type II diabetes mellitus. Cupric oxide nanoparticles got applied in dye-sensitised solar cell. Silver nanoparticles showed better cytotoxicity in HeLa cells. Biomaterial-supported zero-valent iron and stannic oxide nanoparticles proved to have utilities in water purification. Green synthesised Eu 3+ doped Y 2 SiO 5 nanophosphors had significant chromaticity coordinates and average correlated colour temperature, hence find application in displays. Conclusion: Variety of nanomaterials including nanoparticles and nanophophors could successfully be biosynthesised using Calotropis gigantean extract or its latex. These green synthesised nanomaterials have several applications in the healthcare system and technology.

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Small is Beautiful: Challenges and Perspectives of Nano/Meso/Microscience

Cited by 10 publications

References 56 publications

Biogenic Synthesis of NiO Nanoparticles Using Areca catechu Leaf Extract and Their Antidiabetic and Cytotoxic Effects

Biogenic Synthesis of NiO Nanoparticles Using Areca catechu Leaf Extract and Their Antidiabetic and Cytotoxic Effects

Recent Advances in the Synthesis and Application of Polymer Compartments for Catalysis

Calotropis gigantea assisted green synthesis of nanomaterials and their applications: a review

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