Results 71 to 80 of about 1,811,886 (362)

π‐Bridge Engineering of Nonfullerene Acceptors for Organic Photodiodes: Extension of the Near Infrared Response Beyond 1200 nm

open access: yesAdvanced Functional Materials, EarlyView.
A π‐bridge engineering strategy enhances intramolecular charge transfer, enabling non‐fullerene acceptors to extend near‐infrared absorption beyond 1200 nm. The resulting organic photodiodes exhibit high detectivity and fast response. These high‐performance devices demonstrate practical potential in photoplethysmography and optical wireless ...
Meng Qiang Li   +7 more
wiley   +1 more source

4-Bromo-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-5-(4-nitrobenzylideneamino)-1H-pyrazole-3-carbonitrile

open access: yesActa Crystallographica Section E, 2008
The title compound, C18H7BrCl2F3N5O2, is an L-shaped tricyclic imine. The pyrazole ring is essentially coplanar with the nitro-substituted benzene ring [dihedral angle = 3.6 (2)°] and approximately perpendicular to the ...
Shuyan Li, Zhiping Yang
doaj   +1 more source

Structure of ethyl 1-cyanomethyl-5-methoxy-3-phenylindole-2-carboxylate [PDF]

open access: yes, 1990
C20HI8N203, M r = 334.38, orthorhombic, Pbca, a = 7.179 (3), b = 33.014 (3), c = 14.847 (1) A, V = 3518.85/~3, Z = 8, Dx = 1.262, D m = by 53.1 (3) °.
Chandrakantha, T.N.   +3 more
core   +1 more source

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

open access: yesAdvanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman   +3 more
wiley   +1 more source

4,4-Difluoro-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene

open access: yesActa Crystallographica Section E, 2008
In the title compound, C13H15BF2N2, the two pyrrole rings are almost coplanar, with a dihedral angle of 3.08 (10)°. The BF2 plane is almost perpendicular to the boron–dipyrromethene ring plane, with a dihedral angle of 89.99 (7 ...
Hai-Jun Xu
doaj   +1 more source

Toward an understanding of disequilibrium dihedral angles in mafic rocks [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2012
The median dihedral angle at clinopyroxene‐plagioclase‐plagioclase junctions in mafic rocks, Θcpp, is generally lower than equilibrium (109° ± 2°). Observation of a wide range of mafic bodies demonstrates that previous work on systematic variations of Θcpp is incorrect in several important respects.
Holness, M.B.   +4 more
openaire   +5 more sources

Golden Ratio Prediction for Solar Neutrino Mixing

open access: yes, 2009
It has recently been speculated that the solar neutrino mixing angle is connected to the golden ratio phi. Two such proposals have been made, cot theta_{12} = phi and cos theta_{12} = phi/2.
Adisorn Adulpravitchai   +8 more
core   +3 more sources

Circularly Polarized Light Emission From Single Chiral Hedgehog Particles Coated with Nanofilms of Achiral Perovskites

open access: yesAdvanced Materials, EarlyView.
Left‐ and right‐handed circularly polarized light emission (CPLE) is observed from chiral “hedgehog” particles (CHIPs) coated with a nanofilm of achiral perovskite, with spectroscopic bands specific to the perovskites and chirality specific to the template CHIPs. Careful analysis of optical activity indicates that the CPLE of perovskite luminescence is
Michael Veksler   +7 more
wiley   +1 more source

(E)-Benzyl(4-{[1-(prop-2-en-1-yl)-1H-1,2,3-triazol-4-yl]methoxy}benzylidene)amine

open access: yesActa Crystallographica Section E, 2014
The triazole ring of the title compound, C20H20N4O, is normal to the central benzene ring, making a dihedral angle of 90.0 (3)°, and forms a dihedral angle of 69.2 (3)° with the terminal phenyl ring.
Mehmet Akkurt   +4 more
doaj   +1 more source

Ladder Operators for Quantum Systems Confined by Dihedral Angles [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
We report the identification and construction of raising and lowering operators for the complete eigenfunctions of isotropic harmonic oscillators confined by dihedral angles, in circular cylindrical and spherical coordinates; as well as for the hydrogen atom in the same situation of confinement, in spherical, parabolic and prolate spheroidal ...
Ley-Koo, E., Sun, G.-H.
openaire   +5 more sources

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