scholarly journals A General Synthesis Strategy for Monodisperse Metallic and Metalloid Nanoparticles (In, Ga, Bi, Sb, Zn, Cu, Sn, and Their Alloys) via in Situ Formed Metal Long-Chain Amides

2015 ◽  
Vol 27 (2) ◽  
pp. 635-647 ◽  
Author(s):  
Meng He ◽  
Loredana Protesescu ◽  
Riccarda Caputo ◽  
Frank Krumeich ◽  
Maksym V. Kovalenko
Keyword(s):  
Synthesis Strategy ◽  
General Synthesis ◽  
Long Chain

A general synthesis strategy of multi-metallic nanoparticles within mesoporous titania via in situ photo-deposition

2014 ◽  
Vol 2 (41) ◽  
pp. 17321-17328 ◽  
Author(s):  
Peisheng Qiao ◽  
Shihui Zou ◽  
Shaodan Xu ◽  
Juanjuan Liu ◽  
Yunlong Li ◽  
...  
Keyword(s):  
Metallic Nanoparticles ◽  
Mesoporous Titania ◽  
Synthesis Strategy ◽  
General Synthesis

Biophysics (and sociology) of ceramides.

2005 ◽  
Vol 72 ◽  
pp. 177-188 ◽  
Author(s):  
Félix M. Goñi ◽  
F-Xabier Contreras ◽  
L-Ruth Montes ◽  
Jesús Sot ◽  
Alicia Alonso
Keyword(s):  
Cell Biology ◽  
Positive Curvature ◽  
Acyl Chain ◽  
Cell Signalling ◽  
Hexagonal Structure ◽  
Lipid Monolayer ◽  
Flip Flop ◽  
Long Chain ◽  
Bilayer Permeability

In the past decade, the long-neglected ceramides (N-acylsphingosines) have become one of the most attractive lipid molecules in molecular cell biology, because of their involvement in essential structures (stratum corneum) and processes (cell signalling). Most natural ceramides have a long (16-24 C atoms) N-acyl chain, but short N-acyl chain ceramides (two to six C atoms) also exist in Nature, apart from being extensively used in experimentation, because they can be dispersed easily in water. Long-chain ceramides are among the most hydrophobic molecules in Nature, they are totally insoluble in water and they hardly mix with phospholipids in membranes, giving rise to ceramide-enriched domains. In situ enzymic generation, or external addition, of long-chain ceramides in membranes has at least three important effects: (i) the lipid monolayer tendency to adopt a negative curvature, e.g. through a transition to an inverted hexagonal structure, is increased, (ii) bilayer permeability to aqueous solutes is notoriously enhanced, and (iii) transbilayer (flip-flop) lipid motion is promoted. Short-chain ceramides mix much better with phospholipids, promote a positive curvature in lipid monolayers, and their capacities to increase bilayer permeability or transbilayer motion are very low or non-existent.

scholarly journals In situ ozonolysis of polypropylene during extrusion to produce long-chain branches with the aid of TMPTA

RSC Advances ◽  
2017 ◽  
Vol 7 (36) ◽  
pp. 22531-22539 ◽  
Author(s):  
Guang-Jian He ◽  
Bing-Yu Yuan ◽  
Ting-Ting Zheng ◽  
Wen-li Zhu ◽  
Xiao-Chun Yin
Keyword(s):  
Extrusion Process ◽  
Secondary Products ◽  
Long Chain

The introduction of long-chain branches (LCBs) in polypropylene (PP) during the extrusion process is normally induced by peroxide chemicals which are known to cause to the formation of secondary products in the resin.

Antibacterial properties and in vivo studies of tannic acid-stabilized silver–halloysite nanomaterials

Clay Minerals ◽  
2020 ◽  
Vol 55 (2) ◽  
pp. 112-119
Author(s):  
Anna Stavitskaya ◽  
Christina Shakhbazova ◽  
Yulia Cherednichenko ◽  
Läysän Nigamatzyanova ◽  
Gölnur Fakhrullina ◽  
...  
Keyword(s):  
Tannic Acid ◽  
Antibacterial Properties ◽  
Halloysite Nanotubes ◽  
In Vivo Studies ◽  
Negative Effects ◽  
Antibacterial Performance ◽  
Synthesis Strategy ◽  
Clay Nanotubes

AbstractTannic acid-stabilized silver nanoparticles were synthesized in situ on halloysite clay nanotubes. The synthesis strategy included simple steps of tannic acid adsorption on clay nanotubes and further particle formation from silver salt solution. Pristine halloysite nanotubes as well as amino-modified clays were used for silver stabilization in water or ethanol. The materials were tested for antibacterial performance using three different methods. All of the materials produced showed antimicrobial activity. The pristine halloysite-based material with ~5 nm particles produced using ethanol as the solvent and tannic acid as the reducing agent showed the greatest antibacterial activity against Serratia marcescens. The materials were tested in vivo on Caenorhabditis elegans nematodes to ensure their safety, and they showed no negative effects on nematode growth and life expectancy.

scholarly journals Delaminated Polymer/Lamellar Aluminophosphate Nanocomposites Prepared via in SITU Polymerization

2006 ◽  
Vol 15 (5) ◽  
pp. 096369350601500 ◽  
Author(s):  
Jingyu Wang ◽  
Guoping Chen ◽  
Quan Zhou
Keyword(s):  
Polymer Matrix ◽  
In Situ Polymerization ◽  
Short Chain ◽  
Long Chain

A method to synthesize completely delaminated polymer/lamellar aluminophosphate (Mu-4) nanocomposites has been successfully developed, wherein organo-modification of Mu-4 followed by in situ polymerization was applied. It can be found that the long chain n-dodecylamine molecules can favor the intercalation of Mu-4 and thus readily make the Mu-4 layers delaminated in the polymer matrix compared with the short chain N,N-dimethylpropane-1,3-diamine.

Design and in situ synthesis of hierarchical SAPO-34@kaolin composites as catalysts for methanol to olefins

2019 ◽  
Vol 9 (22) ◽  
pp. 6438-6451 ◽  
Author(s):  
Lina Zhang ◽  
Haiyan Liu ◽  
Yuanyuan Yue ◽  
Unni Olsbye ◽  
Xiaojun Bao
Keyword(s):  
In Situ Synthesis ◽  
Synthesis Strategy

An in situ synthesis strategy to fabricate SAPO-34@kaolin composites from kaolin microspheres as catalysts for methanol to olefins is developed.

scholarly journals General synthesis of xLi2MnO3·(1 − x)LiNi1/3Co1/3Mn1/3O2 (x = 1/4, 1/3, and 1/2) hollow microspheres towards enhancing the performance of rechargeable lithium ion batteries

2016 ◽  
Vol 4 (32) ◽  
pp. 12442-12450 ◽  
Author(s):  
Jingfa Li ◽  
Min Li ◽  
Lei Zhang ◽  
Jiazhao Wang
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Hollow Microspheres ◽  
Sacrificial Template ◽  
General Synthesis

Well-crystallized and high-performance xLi2MnO3·(1 − x)LiNi1/3Co1/3Mn1/3O2 (x = 1/2, 1/3, 1/4) hollow microspheres are prepared through a simple in situ self-sacrificial template route.

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