Materials Literature
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This investigation describes an optically transparent antistatic film composed of antimony-doped tin oxide (ATO) nanoparticles dispersed in a polymer matrix, with remarkably improved electrical and optical properties. The film is fabricated on the basis of a synergistic interaction between self-assembling nanoparticle…
The absorption and emission electronic and vibrational Raman spectra of a series of tetrathiafulvalene compounds have been recorded, assigned with the guide of density functional theory calculations, and interpreted according to their chemical nature of the introduced modifications of the tetrathiafulvalene unit. It t…
Double-hydrophilic block copolymer (DHBC)-directed mineralization is investigated by dissipative particle dynamics (DPD) simulation. By mineralization, we refer to the formation of inorganic crystals from the solution. In the current study, the DHBCs are modeled as chains of A and B blocks with repulsion between unlik…
We study bulk and interfacial properties of a model suspension of hard colloidal platelets with continuous orientations and vanishing thickness using both density functional theory, based on either a second virial approach or fundamental measure theory (FMT), and Monte Carlo (MC) simulations. We calculate the bulk equ…
A series of polyphenylene dendrimers (PDs) incorporating additional pentafluorophenyl units have been synthesized. A key building block thereby is the tetrakis(pentafluorophenyl)cyclopentadienone, which serves as the end-capper for making the outer shells of the dendrimers. The variation of the peripheral pentafluorop…
We present the 2D self-assembly properties of an amyloid-like peptide (LSFDNSGAITIG-NH2) (i.e., LSFD) over a whole range of spatial scales. This peptide is known to adopt an amyloid-like behavior in water where it aggregates into fibrils. Monolayers of this 12 amino acid peptide were built by direct spreading and comp…
Abstract We present structure analysis techniques for nanoparticles, which use the explicit simulation of the nanoparticle structure. Data are based on X‐ray powder data, which are interpreted via the Debye equation and pair distribution function data. The techniques allow the exact determination of the nanoparticle s…
We calculate, employing the classical theory of nucleation and growth, the effective diffusion coefficients controlling crystal nucleation of nanosize clusters and the subsequent growth of micron-size crystals at very deep undercoolings, below and above Tg, using experimental nucleation and growth data obtained for st…
Eine ganze Familie: Organophosphonatkomplexe des Vanadiums in hoher Oxidationsstufe sind verbreitet, ihre VIII-Analoga sind dagegen äußerst dünn gesäht. Aus VCl3 und Phosphonaten entsteht unter Solvothermalbedingungen eine ganze Familie entsprechender Vanadium(III)-phosphonate, darunter der schichtförmige Cluster {VII…
Abstract Quiescent melt crystallization rates of various polyolefins including high density polyethylene (PE), isotactic form of polypropylene (PP), polybutene‐1 (PB1), and poly(4‐methyl pentene‐1) (P4MP1) were investigated under both isothermal and nonisothermal conditions using differential scanning calorimetry (DSC…
A novel hyperbranched polymer with aryl borate backbone was obtained by a facile A2+B3 method. Thermal analysis revealed that HBb exhibited excellent thermal stability with a Tg of 221 °C and a weight residue of 71.3% at 800 °C under nitrogen atmosphere. HBb displayed good solubility with readily soluble in common pol…
Understanding electronic communication among interacting chromophores provides the foundation for a variety of applications. The ground-state electronic communication in diphenylethyne-linked zinc-porphyrin dyads has been investigated by a novel molecular design strategy that entails introduction of a 13C-atom (*) at…
Abstract Friedel–Crafts self‐grafting of polystyrene (PSt) under quasiliving carbocationic polymerization was utilized to develop a new rapid one‐pot method for the preparation of star‐shaped polyisobutylene (PIB). First, the polymerization of isobutylene led to PIB with predetermined molecular weight ( $\overline M _…
Kavitationsblasen: Ihr Zerfall erzeugt eine mechanische Spannung, die durch zwei mechanosensitive Polymere an den Enden eines Benzocyclobutens gezielt auf eine bestimmte Bindung übertragen wird. So überraschend es scheinen mag, werden die Moleküle durch Ultraschall auf verbotene Reaktionswege gelenkt, indem unabhängig…
Abstract A TEMPO bromide salt is used to functionalize a silica surface with nitroxyl moieties. The functionalization reaction takes place in 48 h under mild conditions. In a second step, grafts of styrene‐maleic anhydride copolymer are grown from the functionalized silica surface by heating it in the presence of the…
Diblock copolymer nanostructures with metal oxide nanoparticles are prepared on solid supports by spin-coating. The maghemite nanoparticles (Fe 2 O 3 ) are masked with grafted polystyrene chains to allow a tailored positioning on top of nanostructures created by the symmetric polystyrene- block -polyisoprene diblock c…
Ultrathin amorphous carbon ( a -C) films were synthesized on Si(100) substrates by low-pressure, radio-frequency sputtering under different plasma discharge conditions. X-ray photoelectron spectroscopy (XPS) revealed different contents of C, Ar, Si, O, and N in the a -C films. The percentages of tetrahedral (sp 3 ) an…
Abstract Sodium fluorohectorite (FH) was dispersed in polystyrene (PS) by direct melt blending with and without a master batch composed of PS and FH and produced by latex compounding. FH was not intercalated by PS when it was prepared by direct melt compounding. In contrast, FH was well dispersed (mostly intercalated)…
Abstract Nanostructured TiO 2 thin films were prepared using an amphiphilic PS‐ b ‐PEO block copolymer as a templating agent. A good–poor solvent pair‐induced pair phase separation process was coupled with sol–gel chemistry to control the morphology of the TiO 2 film in a solution of 1,4‐dioxane, concentrated HCl, and…
A series of novel tri- and pentanuclear complexes composed of dinuclear LM(2) units (M=Co, Ni, Zn; L=24-membered macrocyclic hexaazadithiophenolate ligand) and ferrocenecarboxylate ([CpFeC(5)H(4)CO(2)](-)) or 1,1'-ferrocenedicarboxylate ([Fe(C(5)H(4)CO(2))(2)](2-)) groups is reported. The complexes [LM(II) (2)(O(2)CC(…