A new mesoporous MOF, Zn4O(bpdc)(btctb)(4/3) (DUT-32), containing linear ditopic (bpdc(2-); 4,4'-biphenylenedicarboxylic acid) and tritopic (btctb(3-); 4,4',4''-[benzene-1,3,5-triyltris(carbonylimino)]tris-benzoate) linkers, was synthesised. The highly porous solid has a total pore volume of 3.16 cm(3) g(-1) specific BET surface area 6411 m(2) g(-1), adding this compound to the top ten materials with highest area.

A modular approach for the synthesis of highly ordered porous and chiral auxiliary (Evans auxiliary) decorated metal–organic frameworks is developed. Our strategy, which uses known structures as model materials incorporation chirality via linker modification, can provide access to a wide range suitable enantioselective separation catalysis. Chiral analogues UMCM-1 have been synthesized investigated enantioseparation compounds in liquid phase first promising results are reported.

Nuclear Magnetic Resonance (NMR) spectroscopy is a well-established method for the investigation of various types porous materials. During past decade, metal–organic frameworks have attracted increasing research interest. Solid-state NMR has rapidly evolved into an important tool study structure, dynamics and flexibility these materials, as well characterization host–guest interactions with adsorbed species such xenon, carbon dioxide, water, many others. The present review introduces...

Abstract Es wird über Leitfähigkeitsmessungen an AgBr‐ und AgCl‐Einkristallen im Bereich von −140 bis +400 °C berichtet. Aus den Meßergebnissen folgen neue Werte für die Fehlordnungskonzentration, Fehlstellenbeweglichkeiten sowie Assoziation zwischen Fremdionen Fehlstellen. Die Bildungsenergie Frenkelpaaren beträgt AgBr 1,06 eV AgCl 1,25 eV. Oberhalb 175 bzw. 250 muß eine zusätzliche Zunahme der Fehlordnungskonzentration infolge Wechselwirkungseffekten berücksichtigt werden. Bei sorgfältiger...

Nickel-rich layered lithiated Ni–Co–Mn oxides (NCMs) are emerging as the most promising candidates for next-generation Li-ion battery cathodes. Progress, however, is hindered by an incomplete understanding of processes that lead to performance-limiting impedance growth and reduced cycling stability. These typically involve surface reconstruction O2 release at cathode surface, both which difficult monitor in working cell. We demonstrate online electrochemical mass spectrometry can be used...

Abstract We examine the effect of introduction Morningstar's Sustainability Rating in March 2016 on mutual fund flows. Exploiting this shock to availability sustainability information, we find strong evidence that retail investors shift money away from low‐rated and into high‐rated funds. An average receives between $ 4.1 million 10.1 higher net flows an suffers 1.0 5.0 lower than average‐rated during first year after publication Rating. Institutional react much more weakly

In this study, we will show how the oxygen release depends on Li2MnO3 content of material and it affects actual voltage fading material. Thus, compared overlithiated NCMs (x • (1-x) LiMeO2; Me = Ni, Co, Mn) with x 0.33, 0.42 0.50, focusing electrochemical performance. We could that differs vastly for materials, while is similar, which leads to conclusion a chemical degradation, occurring at surface, bulk issue these materials. prove hypothesis by HRTEM, showing surface layer, dependent...

Sensor antenna: Functionalization of a new robust mesoporous MOF DUT-25 (Dresden University Technology) is realized by simple liquid-phase adsorption stimuli-responsive guest molecule. It leads to multifunctional composite [email protected] material with solvatochromic behavior (see figure). Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the authors. Please...

Heptacene was generated by surface-assisted didecarbonylation of an α-diketone precursor on a Ag(111) surface.

It is shown that there a close relationship between the conductivity and occurrence of peak in measurements thermally stimulated depolarization. Supposing reciprocal heating scheme (d(1/T)/dt = const) simple relation dark position height corresponding depolarization current found. In survey all possibilities carrying out optically or polarization are compiled. Es wird gezeigt, daß ein enger Zusammenhang besteht zwischen der elektrischen Leitfähigkeit und dem Auftreten eines Signals bei...

An optofluidic iris, which uses the absorption of an opaque liquid in combination with a second transparent for defining optical apertures variable diameters, tuned by directly deforming ring-shaped liquid-liquid interface using electrowetting on dielectrics, is presented. The novelty lies not only absence any moving parts or membranes but also design ring, allows planar microfabrication processes to be used exclusively all functional iris. When compared other approaches, this concept...

Ba0.5Sr0.5Co0.8Fe0.2O3–d (BSCF) compacts were prepared and annealed under application-relevant temperatures between 700 1000 °C for 100 h. The microstructure chemical composition was investigated by electron microscopic techniques energy dispersive X-ray spectroscopy (EDXS) to obtain a detailed insight into the formation of secondary phases which are involved in degradation ionic conductivity BSCF. Secondary precipitated from cubic BSCF phase at ≤900 °C. In addition well-known hexagonal...

A major use of multi-walled carbon nanotubes (MWCNTs) is as functional fillers embedded in a solid matrix, such plastics or coatings. Weathering and abrasion the matrix during can lead to environmental releases MWCNTs. Here we focus on protocol identify quantify primary release induced by weathering, assess reproducibility, transferability, sensitivity towards different materials uses. We prepared 132 specimens two polymer-MWCNT composites containing same grade MWCNTs used earlier OECD...

Numerous recent reviews have highlighted the urgent need for methods to determine biodissolution of nanomaterials in relevant lung fluids, and validate results against bioprocessing vivo. Moreover, it is largely unknown what extent (nano)forms a substance that differ size, shape, or coating also biodissolution. Here we apply previously optimized abiotic flow-through method 24 6 substances compare with alveolar macrophage-assisted subset these vitro short-term inhalation As main result found...

A new metal–organic framework, Cu2(mpbatb)(H2O)2 (DUT-71; DUT, Dresden University of Technology) (mpbatb, 4,4′,4″,4‴-(1,3-phenylenebis(azanetriyl)tetrabenzoate)), was prepared by a solvothermal reaction in mixture DMF and EtOH. Postsynthetic modification DUT-71 using different neutral nitrogen-containing bridging molecules single-crystal to transformation fashion results series porous compounds (DUT-72, DUT-73a, DUT-73b, DUT-74, DUT-90, DUT-91, DUT-95) with apparent BET surface area up 2700...

A flexible Metal-Organic Framework Zn(4)O(BenzTB)(3/2) (DUT-13) was obtained by combination of a tetratopic linker and Zn(4)O(6+) as connector. The material has corundum topology shows the highest pore volume among MOFs.

We explore synergistic degradation, such as the mechanical/chemical/mechanical secondary fragmentation of rubber with multiple simultaneously embedded nanomaterials.

Different nanoforms (NF) of the same substance each need to be registered under REACH, but similarities in physiological interaction -among them biodissolution- can justify read-across within a group NFs, thereby reducing perform animal studies. Here we focused on endpoint inhalation toxicity and explored how differences physical parameters 17 NFs silica, organic inorganic pigments impact dissolution rates, half-times, transformation both pH 7.4 lung lining conditions 4.5 lysosomal...

Abstract Recent advances in transition metal catalyzed olefin polymerization and melt processing stimulate the production of new polymers derived from old monomers. Modern polyolefin processes do not require polymer purification give excellent control molecular supermolecular architectures. Progress catalyst design preparation tailor‐made homo‐and copolymers is highlighted for isotactic, syndiotactic, atactic stereo‐block polypropylene (PP), novel 1‐olefin copolymers, ethylene with polar...