Results 111 to 120 of about 131,197 (331)

Construction of a Two‐Dimensional Molecular Slab with a π‐Extended Hexaarylbenzene Molecule

open access: yesAngewandte Chemie, EarlyView.
A 3D shape‐persistent molecule with a hexaarylbenzene structure consisting of six naphthothiophene diimide units enables the formation of a 2D molecular slab in the solid state, leading to a 2D interactive electronic structure suitable for application to n‐type organic field‐effect transistors.
Haruki Sanematsu   +3 more
wiley   +2 more sources

tert-Butyl 4-({[(E)-1,3-dimethyl-5-phenoxypyrazol-4-yl]methyl}aminooxymethyl)benzoate

open access: yesActa Crystallographica Section E, 2008
The title compound, C24H27N3O4, also known as fenpyroximate, is a commercial acaricide. The benzene ring of the phenoxy group is approximately perpendicular to the pyrazole ring with a dihedral angle of 84.37 (11)°. The dihedral angle between
Na Fu   +4 more
doaj   +1 more source

The Least-Area Tetrahedral Tile of Space

open access: yes, 2019
We determine the least-area unit-volume tetrahedral tile of Euclidean space, without the constraint of Gallagher et al. that the tiling uses only orientation-preserving images of the tile.
Bongiovanni, Eliot   +3 more
core   +1 more source

On Dihedral Angles of a Simplex

open access: yesJournal of Mathematics Research, 2013
For an $n$-simplex, let $\alpha,\,\beta$ denote the maximum, and the minimum dihedral angles of the simplex, respectively. It is proved that the inequality $\alpha\le \arccos(1/n)\le \beta$ always holds, and either side equality implies that the $n$-simplex is a regular simplex.
openaire   +2 more sources

Toward a Rational Design of Conjugated Copolymers with Oxygenated Side Chains for Boosting Thermoelectric Properties

open access: yesAdvanced Energy Materials, EarlyView.
The molecular design strategy that integrates both side chain and backbone engineering in diketopyrrolopyrrole‐based conjugated polymers to identify the optimal balance between doping efficiency and microstructural order is demonstrated. Comprehensive spectroscopic, electrochemical, morphological, and structural characterizations reveal that the ...
Taewoong Han   +13 more
wiley   +1 more source

Evodiamide

open access: yesActa Crystallographica Section E, 2012
The title compound, C19H21N3O, was isolated from the fruits of Evodia rutaecarpa. The indole and benzene rings are both essentially planar with mean derivations of 0.0094 (4) Å and 0.0077 (3) &#197 ...
Fang Cai   +4 more
doaj   +1 more source

Piezoelectric Origami Metamaterials for Enhanced Handwriting Recognition and Trajectory Tracking

open access: yesAdvanced Intelligent Discovery, EarlyView.
This study introduces origami metamaterials inspired by Kresling piezoelectric generators to enhance biometric authentication and handwriting trajectory recognition. Overcoming sensor limitations in conventional devices, the design enables multichannel data acquisition with fewer sensors, utilizing machine learning to accurately identify content ...
Yinzhi Jin, Ting Tan, Zhimiao Yan
wiley   +1 more source

4-(4-Methoxyphenyl)-3-methyl-1,6-dioxa-2,8-diaza-s-indacen-5(7H)-one

open access: yesActa Crystallographica Section E, 2009
In the molecule of the title compound, C16H12N2O4, the pyridine ring is oriented at the same dihedral angle of 2.92 (3)° with respect to the furan and isoxazole rings, while the dihedral angle between furan and isoxazole rings is 1.34 ...
Shu Yan, Xiao-Hong Zhang, Li-Xin Zhang
doaj   +1 more source

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