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61.
Abbotto A Sauvage F Barolo C De Angelis F Fantacci S Graetzel M Manfredi N Marinzi C Nazeeruddin MK 《Dalton transactions (Cambridge, England : 2003)》2011,40(1):234-242
The first example of a heteroarylvinylene π-conjugated quaterpyridine Ru(II) sensitizer (N1044) was synthesized and used in dye-sensitized solar cells; the dye has an effective panchromatic absorption band, covering the entire visible spectrum up to the NIR region, and superior electrochemical characteristics (HOMO/LUMO and bandgap energies) with respect to previous representative Ru(II) bi- and quaterpyridine sensitizers. A record IPCE curve ranging from 360 to 920 nm has been measured with a maximum of 65% at 646 nm and still 33% efficiency at 800 nm; this leads to substantially increased photocurrent (19.2 mA cm(-2)) when compared to the prototype N719 Ru(II) sensitizer. 相似文献
62.
A Rh catalyzed, no-chelate-assisted C-H activation/oxidative olefination reaction of bromoarenes has been discovered, in which the latter ones seem to act as a substrate, terminal oxidant, and catalyst modifier. 相似文献
63.
Substituted 2-bromobenzaldehydes were synthesized from benzaldehydes using a three-step sequence involving a selective palladium-catalyzed ortho-bromination as the key step. O-Methyloxime serves as a directing group in this reaction. A rapid deprotection of substituted 2-bromobenzaldoximes afforded substituted 2-bromobenzaldehydes with good overall yields. 相似文献
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The identification of (3, 4-dihydro-2H-pyran-5-yl)-oxo-acetic acid methyl ester has been realized by combination of two dimensional HETCOR and HMBC techniques. 13C and 1H chemical shifts asignements are described. 相似文献
68.
Frederic Paik Schoenberg 《Annals of the Institute of Statistical Mathematics》2002,54(2):445-457
The process obtained by rescaling a homogeneous Poisson process by the maximum likelihood estimate of its intensity is shown to have surprisingly strong self-correcting behavior. Formulas for the conditional intensity and moments of the rescaled Poisson process are derived, and its behavior is demonstrated using simulations. Relationships to the Brownian bridge are explored, and implications for point process residual analysis are discussed. 相似文献
69.
LetG be a connected Poisson-Lie group. We discuss aspects of the question of Drinfel'd:can G be quantized? and give some answers. WhenG is semisimple (a case where the answer isyes), we introduce quantizable Poisson subalgebras ofC ∞(G), related to harmonic analysis onG; they are a generalization of F.R.T. models of quantum groups, and provide new examples of quantized Poisson algebras. 相似文献
70.
We have designed and tested a new relativistic Lagrangian hydrodynamics code, which treats gravity in the conformally flat
approximation to general relativity. We have tested the resulting code extensively, finding that it performs well for calculations
of equilibrium single-star models, collapsing relativistic dust clouds, and quasi-circular orbits of equilibrium solutions.
By adding a radiation reaction treatment, we compute the full evolution of a coalescing binary neutron star system. We find
that the amount of mass ejected from the system, much less than a per cent, is greatly reduced by the inclusion of relativistic
gravitation. The gravity wave energy spectrum shows a clear divergence away from the Newtonian point-mass form, consistent
with the form derived from relativistic quasi-equilibrium fluid sequences. 相似文献