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66.915 Aktuelle Fachpublikationen zum Thema Formation

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Molecular dynamics simulation of the electrical conductive network formation of polymer nanocomposites with polymer-grafted nanorod

03.07.2018 | Fanzhu Li; Xiaohui Duan; Huan Zhang; Bin Li; Jun Liu; Yangyang Gao; Liqun Zhang, Physical Chemistry Chemical Physics, 2018

Grafting chains on the surface of filler is an effective strategy to tune and control the filler conductive network, which can be utilized to fabricate polymer nanocomposites (PNCs) with high electrical conductivity. In this work, by employing the coarse-grained molecular dynamics simulation, we ...

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Kinetic barriers to [small alpha]-synuclein protofilament formation and conversion into mature fibrils

03.07.2018 | James W. P. Brown; Georg Meisl; Tuomas P. J. Knowles; Alexander K. Buell; Christopher M. Dobson; Céline Galvagnion, Chemical Communication, 2018

Oligomeric and protofibrillar aggregates that are populated along the pathway of amyloid fibril formation appear generally to be more toxic than the mature fibrillar state. In particular, α-synuclein, the protein associated with Parkinson's disease, forms kinetically trapped protofibrils in the ...

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A versatile biosynthetic approach to amide bond formation

03.07.2018 | Helena K. Philpott; Pamela J. Thomas; David Tew; Doug E. Fuerst; Sarah L. Lovelock, Green Chemistry, 2018

The development of versatile and sustainable catalytic strategies for amide bond formation is a major objective for the pharmaceutical sector and the wider chemical industry. Herein, we report a biocatalytic approach to amide synthesis which exploits the diversity of Nature's amide bond forming ...

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Production of Dynamic Lipid Bilayers Using the Reversible Thiol-Thioester Exchange Reaction

03.07.2018 | Danielle Stephanie Konetski; Sudheendran Mavila; Chen Wang; Brady T. Worrell; Christopher N Bowman, Chemical Communication, 2018

Thiol lysolipids undergo thiol-thioester exchange with two phenyl thioester-functionalized tails to produce phospholipid structures that assemble into liposomes with differences in exchange rates, temperature sensitivity, permeability, and continued exchange behavior. This in situ formation ...

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On Mechanisms for Mesocrystal Formation: Magnesium Ions and Water Environments Regulate Crystallization of Amorphous Minerals

03.07.2018 | Yu-Chieh Huang; Maxim Gindele; Jennifer Knaus; Ashit Rao; Denis Gebauer, CrystEngComm, 2018

Nature produces hierarchical, functional materials by shaping amorphous mineral precursors under physiological conditions. Although biominerals inspire the architectures of synthetic counterparts, the biogenic phase transformations yielding precise crystalline forms, polymorphs and structures are ...

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Effects of diminished steric protection at phosphorus on stability and reactivity of oxaphosphirane complexes

03.07.2018 | J. Fassbender; G. Schnakenburg; A. Espinosa Ferao; R. Streubel, Dalton Transactions, 2018

Readily available P-tBu substituted Li/Cl phosphinidenoid complexes react with carbonyl compounds to furnish sterically almost unhindered oxaphosphirane complexes that reveal new and surprisingly facile intra- and intermolecular ring expansion reactions. 1,3,2-Dioxaphosphole complex formation is ...

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A[small beta] under stress: the effects of acidosis, Cu2+-binding, and oxidation on amyloid [small beta]-peptide dimers

03.07.2018 | Qinghua Liao; Michael C. Owen; Sofia Bali; Bogdan Barz; Birgit Strodel, Chemical Communication, 2018

In light of the high affinity of Cu2+ for Alzheimer's Aβ1–42 and its ability to subsequently catalyze the formation of radicals, we examine the effects of Cu2+ binding, Aβ oxidation, and an acidic environment on the conformational dynamics of the smallest Aβ1–42 oligomer, the Aβ1–42 dimer. ...

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Spontaneous domain formation in disordered copolymers as a mechanism for chromosome structuring

03.07.2018 | Matteo Negri; Marco Gherardi; Guido Tiana; Marco Cosentino Lagomarsino, Soft Matter, 2018

Motivated by the problem of domain formation in chromosomes, we studied a co--polymer model where only a subset of the monomers feel attractive interactions. These monomers are displaced randomly from a regularly-spaced pattern, thus introducing some quenched disorder in the system. Previous work ...

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Formation of arrays of planar, murine, intestinal crypts possessing a stem/proliferative cell compartment and differentiated cell zone

03.07.2018 | Raehyun Kim; Yuli Wang; Shee-Hwan J. Hwang; Peter J. Attayek; Nicole M. Smiddy; Mark I. Reed; Christopher E. Sims; N ..., Lab on a Chip, 2018

A simple, in vitro intestinal model recapitulating key aspects of crypt architecture and physiology would facilitate our understanding the impact of drugs, foods and microbial metabolites on the intestine. To address the limitations of previously reported intestinal in vitro platforms, we ...

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Nitramino-functionalized tetracyclic oxadiazoles as Energetic Materials with High performance and High Stability: Crystal Structures and Energetic Properties

03.07.2018 | Qi Sun; Ming Lu; Qiuhan Lin, CrystEngComm, 2018

A series of tetracyclic energetic materials are developed through the introduction of 1,2,4-oxadiazole into nitramino-1,2,5-oxadiazole. All these thirteen new compounds were fully characterized and seven of them were further confirmed by single crystal X-ray diffraction. Salt formation leads to ...

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