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Dr. Mathias Mydlak Dr. Cheng‐Han Yang Dr. Federico Polo Dr. Anzhela Galstyan Dr. Constantin G. Daniliuc Michael Felicetti Jens Leonhardt Dr. Cristian A. Strassert Prof. Luisa De Cola 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(13):5161-5172
PtII complexes with one bulky, sterically demanding, tertiary phosphite ancillary ligand and a coordinating chromophore are herein presented. The phosphite ligand, tris(2,4‐di‐tert‐butylphenyl) acts as a bidentate ligand coordinating the platinum ion through the central phosphorus atom and a cyclometalating carbon atom of one of the substituents. The two free phenoxy moieties lie above and below the coordination plane, leading to steric hindrance that avoids aggregation and provides solubility in organic solvents. The other two coordination sites on the central metal ion are occupied by a chromophoric ligand, which is responsible for the energy of the luminescent excited state. This separation of functions, on the two coordinated ligands, allows the use of a wider range of luminophores with good luminescent properties, maintaining the control of the intermolecular interactions with the non‐chromophoric ligand. Based on this approach we were able to achieve a bright deep blue emission (λ=444 nm, Φem=0.38) from a complex with a tailored ligand, which was then used for the fabrication of an electroluminescent device. In addition commercially available luminophores were also employed to synthesize green emitters. 相似文献
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946.
Jens Marklof 《Monatshefte für Mathematik》2020,191(2):279-294
This study is motivated by a series of recent papers that show that, if a given deterministic sequence in the unit interval has a Poisson pair correlation function, then the sequence is uniformly distributed. Analogous results have been proved for point sequences on higher-dimensional tori. The purpose of this paper is to describe a simple statistical argument that explains this observation and furthermore permits a generalisation to bounded Euclidean domains as well as compact Riemannian manifolds. 相似文献
947.
Dr. Jens Voskuhl Dr. Christian Wendeln M. Sc. Frank Versluis M. Sc. Eva‐Corinna Fritz M. Sc. Oliver Roling M. Sc. Harshal Zope Dr. Christian Schulz Dipl.‐Phys. Stefan Rinnen Prof. Dr. Heinrich F. Arlinghaus Prof. Dr. Bart Jan Ravoo Dr. Alexander Kros 《Angewandte Chemie (International ed. in English)》2012,51(50):12616-12620
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Ole Mallow Monther A. Khanfar Moritz Malischewski Pamela Finke Malte Hesse Enno Lork Timo Augenstein Frank Breher Jeffrey R. Harmer Nadezhda V. Vasilieva Andrey Zibarev Artem S. Bogomyakov Konrad Seppelt Jens Beckmann 《Chemical science》2015,6(1):497-504
One-electron oxidation of two series of diaryldichalcogenides (C6F5E)2 (13a–c) and (2,6-Mes2C6H3E)2 (16a–c) was studied (E = S, Se, Te). The reaction of 13a and 13b with AsF5 and SbF5 gave rise to the formation of thermally unstable radical cations [(C6F5S)2]˙+ (14a) and [(C6F5Se)2]˙+ (14b) that were isolated as [Sb2F11]– and [As2F11]– salts, respectively. The reaction of 13c with AsF5 afforded only the product of a Te–C bond cleavage, namely the previously known dication [Te4]2+ that was isolated as [AsF6]– salt. The reaction of (2,6-Mes2C6H3E)2 (16a–c) with [NO][SbF6] provided the corresponding radical cations [(2,6-Mes2C6H3E)2]˙+ (17a–c; E = S, Se, Te) in the form of thermally stable [SbF6]– salts in nearly quantitative yields. The electronic and structural properties of these radical cations were probed by X-ray diffraction analysis, EPR spectroscopy, and density functional theory calculations and other methods. 相似文献
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