Fe3O4 Nanoparticles with Carboxylic Acid Functionality for Improving the Structural Integrity of Whole Vitrified Rat Kidneys

2021 ◽  
Author(s):  
Taijie Zhan ◽  
Ke Liu ◽  
Jiamin Yang ◽  
Hangyu Dang ◽  
Liang Chen ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
Structural Integrity ◽  
Rat Kidneys

Chlorosulfonic Acid Supported Piperidine-4-carboxylic Acid (PPCA) Functionalized Fe3O4 Nanoparticles (Fe3O4-PPCA): The Efficient, Green and Reusable Nanocatalyst for the Synthesis of Pyrazolyl Coumarin Derivatives under Solvent-Free Conditions

2019 ◽  
Vol 22 (2) ◽  
pp. 123-128
Author(s):  
Setareh Habibzadeh ◽  
Hassan Ghasemnejad-Bosra ◽  
Mina Haghdadi ◽  
Soheila Heydari-Parastar
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
High Efficiency ◽  
Reaction Times ◽  
Chlorosulfonic Acid ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Solvent Free Conditions

Background: In this study, we developed a convenient methodology for the synthesis of coumarin linked to pyrazolines and pyrano [2,3-h] coumarins linked to 3-(1,5-diphenyl-4,5- dihydro-1H-pyrazol-3-yl)-chromen-2-one derivatives using Chlorosulfonic acid supported Piperidine-4-carboxylic acid (PPCA) functionalized Fe3O4 nanoparticles (Fe3O4-PPCA) catalyst. Materials and Methods:: Fe3O4-PPCA was investigated as an efficient and magnetically recoverable Nanocatalyst for the one-pot synthesis of substituted coumarins from the reaction of coumarin with a variety of aromatic aldehydes in high to excellent yield at room temperature under solvent-free conditions. The magnetic nanocatalyst can be easily recovered by applying an external magnet device and reused for at least 10 reaction runs without considerable loss of reactivity. Results and Conclusion: The advantages of this protocol are the use of commercially available materials, simple and an inexpensive procedure, easy separation, and an eco-friendly procedure, and it shows good reaction times, good to high yields, inexpensive and practicability procedure, and high efficiency.

One-dimensional hybrid nanocomposite of high-density monodispersed Fe3O4 nanoparticles and carbon nanotubes for high-capacity storage of lithium and sodium

2016 ◽  
Vol 4 (47) ◽  
pp. 18532-18542 ◽  
Author(s):  
Xiujuan Wang ◽  
Xiaojie Liu ◽  
Gang Wang ◽  
Yuan Xia ◽  
Hui Wang
Keyword(s):  
Carbon Nanotubes ◽  
Fe3o4 Nanoparticles ◽  
Structural Integrity ◽  
High Capacity ◽  
High Density ◽  
Hybrid Nanocomposite ◽  
One Dimensional

Filling CNT channels with monodispersed Fe3O4 nanoparticles yielded a nanocomposite showing high structural integrity for use in LIBs and SIBs.

Synthesis of PEO-based block copolymers bearing cyclic hydrazide or carboxylic acid moieties and their applications as stabilizers for Fe3O4 nanoparticles

2011 ◽  
Vol 19 (7) ◽  
pp. 716-721 ◽  
Author(s):  
Jinheung Kim ◽  
Sangmi Lee ◽  
Joo Hyeon Nam ◽  
Young Jun Cho ◽  
Joohoon Kim ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Block Copolymers ◽  
Fe3o4 Nanoparticles

scholarly journals Supramolecular frameworks based on [60]fullerene hexakisadducts

2017 ◽  
Vol 13 ◽  
pp. 1-9 ◽  
Author(s):  
Andreas Kraft ◽  
Johannes Stangl ◽  
Ana-Maria Krause ◽  
Klaus Müller-Buschbaum ◽  
Florian Beuerle
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Carboxylic Acid ◽  
Structural Integrity ◽  
Structure Stability ◽  
Side Chains ◽  
X Ray Diffraction ◽  
X Ray

[60]Fullerene hexakisadducts possessing 12 carboxylic acid side chains form crystalline hydrogen-bonding frameworks in the solid state. Depending on the length of the linker between the reactive sites and the malonate units, the distance of the [60]fullerene nodes and thereby the spacing of the frameworks can be controlled and for the most elongated derivative, continuous channels are obtained within the structure. Stability, structural integrity and porosity of the material were investigated by powder X-ray diffraction, thermogravimetry and sorption measurements.

Cinchona Alkaloid Derivatives modified Fe3O4 Nanoparticles for Enantioselective Ring Opening of meso- Cyclic Anhydrides

2022 ◽  
Author(s):  
Hemant P. Soni ◽  
Sanjiv O. Tomer
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
Ring Opening ◽  
Acid Group ◽  
Cinchona Alkaloid ◽  
Carboxylic Acid Group ◽  
Cyclic Anhydrides ◽  
Quinoline Moiety ◽  
Molecular Framework ◽  
Long Chain

In the present work, the molecular framework of the quinidine was modified at the methoxy functional of C6’ carbon of quinoline moiety with a long-chain carboxylic acid group (-COOH) and...

Synthesis and conductivity studies of piperidine-4-carboxylic acid functionalized Fe3O4 nanoparticles

2012 ◽  
Vol 47 (9) ◽  
pp. 2193-2199 ◽  
Author(s):  
H. Erdemi ◽  
A. Baykal ◽  
E. Karaoğlu ◽  
M.S. Toprak
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles

Electron Beam Damage of Biomolecules Assessed by Energy Loss Spectroscopy

1978 ◽  
Vol 36 (3) ◽  
pp. 61-69
Author(s):  
M. Isaacson ◽  
M.L. Collins ◽  
M. Listvan
Keyword(s):  
Electron Microscopy ◽  
Radiation Damage ◽  
Structural Integrity ◽  
Analytical Electron Microscopy ◽  
High Dose ◽  
Dose Rates ◽  
Special Cases ◽  
Analytical Electron ◽  
Atom Migration ◽  
Beam Damage

Over the past five years it has become evident that radiation damage provides the fundamental limit to the study of blomolecular structure by electron microscopy. In some special cases structural determinations at very low doses can be achieved through superposition techniques to study periodic (Unwin & Henderson, 1975) and nonperiodic (Saxton & Frank, 1977) specimens. In addition, protection methods such as glucose embedding (Unwin & Henderson, 1975) and maintenance of specimen hydration at low temperatures (Taylor & Glaeser, 1976) have also shown promise. Despite these successes, the basic nature of radiation damage in the electron microscope is far from clear. In general we cannot predict exactly how different structures will behave during electron Irradiation at high dose rates. Moreover, with the rapid rise of analytical electron microscopy over the last few years, nvicroscopists are becoming concerned with questions of compositional as well as structural integrity. It is important to measure changes in elemental composition arising from atom migration in or loss from the specimen as a result of electron bombardment.

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