Results 61 to 70 of about 371,340 (288)

Isolation and Reactivity of a Square‐Planar Trisamido Silane

open access: yesAngewandte Chemie, EarlyView.
We report the synthesis and comprehensive characterisation of a square‐planar Si(+IV) hydride supported by an unsymmetric, trianionic and dearomatised N,N,N‐pincer ligand. This system enables element–ligand cooperative reactivity as an alternative to silicon‐centred redox chemistry, illuminating a largely unexplored regime in high‐valent silicon ...
David M. J. Krengel   +5 more
wiley   +2 more sources

The World Before 1907: Searching for Chemical Literature before Chemical Abstracts. [PDF]

open access: yes, 2006
An overview of early abstracting sources for historical chemical literature prior to the launch of Chemical Abstracts in 1907.UT ...
Flaxbart, David
core   +1 more source

3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications

open access: yesAdvanced Robotics Research, EarlyView.
Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun   +3 more
wiley   +1 more source

Portrait der Chemie-Abteilung am TWI

open access: yesCHIMIA, 1992
Die Chemie-Abteilung am TWI ist die alteste ihrer Art an einer Schweizer Ingenieurschule. Der folgende Artikel zeigt auf, wie aus der alten 'Schule für Chemiker' eine moderne, grosse Chemieabteilung entstanden ist.
Heiner G. Bührer, Gaston Wolf
doaj   +2 more sources

Homoleptic and Heteroleptic Carbones L1‐C‐L2

open access: yesAngewandte Chemie, EarlyView.
DFT and CCSD(T) calculations reveal that heteroleptic carbones L₁–C–L2 are thermodynamically stable species even with a weakly binding donor such as N2. Bond strengths show no simple correlation with bond lengths. Weaker carbon‐ligand bonds in homoleptic complexes L1─C─L1 are mostly strengthened in heteroleptic carbons L1─C─L2, while stronger bonds L2 ...
Ya Hu   +4 more
wiley   +2 more sources

Online-Datenbank-Recherchen an der Hochschule

open access: yesCHIMIA, 1987
Die Nutzung von Online-Literatur- und -Struktur-Recherchen ist für Chemiker an den Hochschulen im Gegensatz zur chemischen Industrie immer noch zu wenig verbreitet.
Engelbert Zass
doaj   +1 more source

Printable Conductive Hydrogels for Electrochemical Biosensing and Soft Bioelectronic Interfaces

open access: yesAdvanced Science, EarlyView.
Flexible, conductive hydrogels that integrate printability, mechanical tunability, biocompatibility, and electronic performance remain challenging to achieve. Here, we develop 3D‐printable poly(ethylene glycol)–poly(pyrrole)‐ hydrogels with tissue‐like mechanics, high cytocompatibility, and robust electrochemical function.
Lukas Hein   +6 more
wiley   +1 more source

Vliv výuky na postoje žáků SOŠ k chemii

open access: yesScientia in Educatione, 2013
Výzkumné šetření je zaměřeno na postoje žáků středních odborných škol (SOŠ) nechemického zaměření k chemii. Cílem je zjistit a porovnat postoje žáků na začátku a na konci školního roku, tedy po příchodu na střední školu a po skončení výuky chemie. Zadaný
Martin Rusek
doaj  

Energy‐Resolved Femtosecond Dynamics of Plasmon‐Induced Hole Injection at Au/GaN Heterointerfaces

open access: yesAdvanced Science, EarlyView.
We reveal the spectral signature of ultrafast nonthermal hot‐hole transfer at plasmonic heterointerfaces, which reshapes hot‐carrier relaxation dynamics and significantly enhances hydrogen evolution, providing a mechanistic basis for optimizing hot‐carrier utilization in photocatalysis.
Yuying Gao   +8 more
wiley   +1 more source

Two dimensional crystals in three dimensions: electronic decoupling of single-layered platelets in colloidal nanoparticles

open access: yes, 2018
Two-dimensional crystals, single sheets of layered materials, often show distinct properties desired for optoelectronic applications, such as larger and direct band gaps, valley- and spinorbit effects. Being atomically thin, the low amount of material is
Beal   +43 more
core   +1 more source

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