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Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]

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https://www.readbyqxmd.com/read/29446545/from-aqueous-dispersions-to-functional-materials-capillarity-and-electrostatic-adhesion
#1
REVIEW
Fernando Galembeck
The author was first acquainted with polymer lattices as model particles for studying sedimentation phenomena, evolving towards the elucidation of synthetic and natural latex heterogeneity and microchemistry. This brought new elements to understand the remarkable mechanical properties of natural rubber, leading to the latex route for making nanocomposites. These materials show exceptional properties that are largely due to electrostatic adhesion, a concept that had been previously presented by Deryagin but was later abandoned...
February 15, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29442429/towards-k-ion-and-na-ion-batteries-as-beyond-li-ion
#2
REVIEW
Kei Kubota, Mouad Dahbi, Tomooki Hosaka, Shinichi Kumakura, Shinichi Komaba
Li-ion battery commercialized by Sony in 1991 has the highest energy-density among practical rechargeable batteries and is widely used in electronic devices, electric vehicles, and stationary energy storage system in the world. Moreover, the battery market is rapidly growing in the world and further fast-growing is expected. With expansion of the demand and applications, price of lithium and cobalt resources is increasing. We are, therefore, motivated to study Na- and K-ion batteries for stationary energy storage system because of much abundant Na and K resources and the wide distribution in the world...
February 14, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29418062/2d-nanostructured-metal-hydroxides-with-gene-delivery-and-theranostic-functions-a-comprehensive-review
#3
REVIEW
Goeun Choi, Sairan Eom, Ajayan Vinu, Jin-Ho Choy
Layered double hydroxides (LDHs) with two dimensional structure have been attracted considerable interest in exploring new intercalative nanohybrids, such as inorganic-LDHs, organic-LDHs and bio-LDHs ones, which often exhibit extraordinarily synergetic effects and complementary performances. More recently, bio-related nanotechnology becomes one of the most essential research field in the viewpoint of the health and safety of human being. In this regard, LDHs have been focused as an important inorganic material for gene and drug delivery carriers with imaging and targeting functions...
February 8, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29405617/structuring-of-amide-cross-linked-non-bridged-and-bridged-alkyl-based-silsesquioxanes
#4
REVIEW
S C Nunes, V de Zea Bermudez
The development of sophisticated organized materials exhibiting enhanced properties is a challenging topic of the domain of organic/inorganic hybrid materials. This review, composed of four sections, reports the work we have carried out over the last 10 years on the synthesis of amide cross-linked alkyl/siloxane hybrids by means of sol-gel chemistry and self-directed assembly/self-organization routes relying on weak interactions (hydrophobic interactions and hydrogen bonding). The various as-produced lamellar structures displaying a myriad of morphologies, often closely resembling those found in natural materials, are discussed...
February 6, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29405589/development-of-clay-based-films
#5
REVIEW
Takeo Ebina
Phyllosilicate (clay) is used as a filler to improve the thermal stability and gas barrier properties of plastic films. However, few film preparation trials used clays as the main component. Many researchers have studied clay-based films (CBFs) that are heat-resistant and have high gas barrier properties against various gases (such as oxygen, water vapor, and hydrogen) over a wide range of temperatures. An organic binder improves the film toughness, but increases gas permeation. CBFs are obtained by solution casting and show excellent incombustibility and electrical insulation...
February 6, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29388725/recent-advances-in-ring-opening-functionalization-of-cycloalkanols-by-c-c-%C3%AF-bond-cleavage
#6
REVIEW
Xinxin Wu, Chen Zhu
Cycloalkanols prove to be privileged precursors for the synthesis of distally substituted alkyl ketones and polycyclic aromatic hydrocarbons (PAHs) by virtue of cleavage of their cyclic C-C bonds. Direct functionalization of cyclobutanols to build up other chemical bonds (e. g., C-F, C-Cl, C-Br, C-N, C-S, C-Se, C-C, etc.) has been achieved by using the ring-opening strategy. Mechanistically, the C-C cleavage of cyclobutanols can be involved in two pathways: (a) transition-metal catalyzed β-carbon elimination; (b) radical-mediated 'radical clock'-type ring opening...
February 1, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29388722/driving-the-crystallization-of-zeolites
#7
REVIEW
Peng Lu, L A Villaescusa, M A Camblor
The synthesis of zeolites with new structures and/or improved properties heavily relies on trial and error efforts that are not entirely blind, as the large empirical background accumulated for the last 7 decades can be, to some extent, rationalized and purposefully used to make new materials. The so-called structure-directing factors may be combined to promote (or frustrate) the crystallization of a particular structure. This personal account opens with the concept of geoinspiration, as suggested by Prof. Ruiz-Hitzky, and its application to zeolite synthesis...
February 1, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29380939/electromagnetic-shielding-materials-in-ghz-range
#8
REVIEW
Marta González, Javier Pozuelo, Juan Baselga
The state-of-the art in the design and the manufacture methods of the different electromagnetic shielding materials has been reviewed. This topic has become a mainstream field of research because of the electromagnetic pollution generated by telecommunication technology development. The review is centred in absorbent materials and shows a general overview of how the absorption properties of such composites can be tailored through changes in geometry, composition, morphology, and the filler particles content...
January 30, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29341378/halloysite-nanotubes-green-nanomaterial-for-functional-organic-inorganic-nanohybrids
#9
REVIEW
Wei Ma, Hui Wu, Yuji Higaki, Atsushi Takahara
The unique one-dimensional nanoporous structure and the reactive external and internal surfaces make halloysite nanotube (HNT) an interesting nanomaterial for various applications. HNT is a green nanomaterial because it is easily available from abundant deposits in nature and is biocompatible with low cytotoxicity. After a brief introduction on the structure of HNT, recent advances in surface modification of HNT and its functional organic-inorganic nanohybrids including hybrid nanocontainers, flame retardant nanocomposites, dye removal adsorbents, liquid marbles, and superamphiphobic coatings are introduced...
January 17, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29323784/nano-silver-vanadate-agvo3-synthesis-new-functionalities-and-applications
#10
REVIEW
Ana Paula de Melo Monteiro, Raphael Dias Holtz, Leandro Carneiro Fonseca, Carlos Henrique Zanini Martins, Marcelo de Sousa, Luis Augusto Visani de Luna, Djalma Lucas de Sousa Maia, Oswaldo Luiz Alves
Silver vanadates have been widely investigated because of their many interesting properties and their potential use in several applications. In addition to this, a large number of groups have investigated silver vanadates in the form of nanostructures. Here, we address first the synthesis and properties of nanosilver vanadate. Different techniques, such as precipitation, thermal decomposition, hydrothermal treatment, and sol-gel, are among the methods that have been employed for the controlled synthesis of silver vanadate...
January 11, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29320616/epoxy-nanocomposites-filled-with-carbon-nanoparticles
#11
REVIEW
M Martin-Gallego, V Yuste-Sanchez, R Sanchez-Hidalgo, R Verdejo, M A Lopez-Manchado
Over the past decades, the development of high performance lightweight polymer nanocomposites and, in particular, of epoxy nanocomposites has become one the greatest challenges in material science. The ultimate goal of epoxy nanocomposites is to extrapolate the exceptional intrinsic properties of the nanoparticles to the bulk matrix. However, in spite of the efforts, this objective is still to be attained at commercially attractive scales. Key aspects to achieve this are ultimately the full understanding of network structure, the dispersion degree of the nanoparticles, the interfacial adhesion at the phase boundaries and the control of the localization and orientation of the nanoparticles in the epoxy system...
January 10, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29320613/halloysite-nanotubes-for-cleaning-consolidation-and-protection
#12
REVIEW
Giuseppe Cavallaro, Giuseppe Lazzara, Stefana Milioto, Filippo Parisi
Herein, we report our recent research concerning the development of halloysite based protocols for cleaning, consolidation and protection purposes. Surface modification of halloysite cavity by anionic surfactants was explored to fabricate inorganic micelles able to solubilize hydrophobic contaminants. Hybrid dispersions based on halloysite and ecocompatible polymers were tested as consolidants for paper and waterlogged archaeological woods. Encapsulation of deacidifying and flame retardant agents within the halloysite lumen was conducted with aim to obtain nanofiller with a long-term protection ability...
January 10, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29320612/precise-synthesis-of-well-defined-inorganic-organic-hybrid-particles
#13
REVIEW
Kota Shiba, Makoto Ogawa
Synthesis of hybrid particles toward precisely designed hierarchical nanoarchitectures is summarized. In order to satisfy the demands for a variety of materials' performances, the selection of materials, composition and synthesis is carefully done. Flow reactors are one of the useful synthetic means to prepare hybrid materials, especially those with hierarchically and precisely designed multi-components hybrid particles, owing to the efficient mixing and heat exchange in the reactor as well as its connectable (both parallel and sequential) feature...
January 10, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29320606/splitting-water-by-electrochemistry-and-artificial-photosynthesis-excellent-science-but-a-nightmare-of-translation
#14
REVIEW
Markus Antonietti, Alexandr Savateev
Water splitting to its elements, either by electrochemistry or by solar light, is among the most covered areas in nanostructured functional materials. This personal account article analyzes potential downstream translation problems and reviews alternative chemistries with a potential higher return. Liberation of oxygen for accepting the holes is a kinetically demanding half reaction afflicted with kinetic hindrances and high overpotentials, while at the same time no marketable value is created (atmospheric oxygen is free to use)...
January 10, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29316247/hydrogen-storage-in-porous-materials-status-milestones-and-challenges
#15
REVIEW
Ángel Berenguer-Murcia, Juan Pablo Marco-Lozar, Diego Cazorla-Amorós
In this account the most relevant advancements in hydrogen storage in porous materials are presented. These include the current state-of-the-art, the challenges which have been overcome, and the hurdles which still remain. The most important milestones which will be discussed in this work will be the development of new apparatuses capable of delivering reliable results under a broad range of operational conditions, in which analysis temperature and pressure are critical parameters. Other aspects such as the materials storage capacity in gravimetric and volumetric terms will be critically discussed to identify the conditions required from an ideal material...
January 9, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29316225/layered-double-hydroxide-based-functional-nanohybrids-as-controlled-release-carriers-of-pharmaceutically-active-ingredients
#16
REVIEW
Suprakas Sinha Ray, Damodar Mosangi, Sreejarani Pillai
The chemical stability, degradation and penetration ability of pharmaceutically active ingredients in topical formulations are the greatest challenges because of problems with the protection of actives for long times and with delivery. Therefore, the development of unique and efficient substrate material is vital for their protection and controlled drug release. Layered double hydroxides (LDHs) known as hydrotalcite like compounds possess positive charges due to isomorphic substitutions, which are counterbalanced by hydrated exchangeable anions located in the interlayer region...
January 9, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29314634/advanced-inorganic-nanosystems-for-skin-drug-delivery
#17
REVIEW
E Carazo, A Borrego-Sánchez, F García-Villén, R Sánchez-Espejo, P Cerezo, C Aguzzi, C Viseras
On/into/through the skin drug delivery represents an attractive alternative for the oral route, providing local and/or systemic drug delivery. Due to its complex and well-organised structure, most of the drugs show difficulties to penetrate the human skin. Therefore, enormous efforts have been invested to develop intelligent drug delivery systems overcoming the skin barrier with particular emphasis on increasing therapeutic activity and minimizing undesirable side-effects. Most of these strategies require the use of singular materials with new properties...
January 5, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29316287/sol-gel-synthesis-and-fine-characterization-of-hierarchically-porous-and-multifunctional-silica-based-membranes
#18
REVIEW
André Ayral
Rational design of thin films for improving their functional properties can result in complex architectures. This issue will be here illustrated in the case of sol-gel derived hierarchically porous and multifunctional silica-based membranes. Thin silica layers with isolated and randomly distributed macropores, isolated and ordered mesopores and an interconnected microporosity in the silica walls are thus obtained by combining different synthesis strategies. The impact of the overall porosity and of the pore size distribution on the mechanical properties of these layers is investigated coupling experimental measurements and numerical simulation...
January 4, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29314621/building-up-functional-bionanocomposites-from-the-assembly-of-clays-and-biopolymers
#19
REVIEW
Ana C S Alcântara, Margarita Darder
Functional bionanocomposites are developed from the assembly of naturally occurring polymers and inorganic solids that show at least one dimension at the nanoscale. Our research group focused on the development of bionanocomposites based on clay minerals, including smectites and fibrous silicates, as well as layered double hydroxides. The resulting materials show interesting properties regarding biocompatibility and biodegradability, together with improved mechanical and thermal properties in comparison to the pristine biopolymer...
January 4, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29314594/functional-kaolinite
#20
REVIEW
Christian Detellier
The world resources of all clays are extremely large. Among the various types of clays, the world mine production of kaolin in 2016 was 37.0 Mt, the largest mined clay. Kaolin is traditionally used in ceramics, refractories and as paper coating and filling. But kaolin, as it is demonstrated in this paper, has a bright potential for use in non-traditional, high value-added, applications. This is particularly true for its principal component: the mineral species kaolinite which has a chemical structure allowing its functionalization, leading to a variety of potential applications...
January 4, 2018: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
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