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91.
An upper estimate for the Lempert function of any C
1+ε
-smooth bounded domain in
\mathbbCn{\mathbb{C}^n} is found in terms of the boundary distance. 相似文献
92.
Aurore Richel Pascal Laurent Bernard Wathelet Jean-Paul Wathelet Michel Paquot 《Comptes Rendus Chimie》2011,14(2-3):224-234
The valorisation of carbohydrates arising from the hydrolysis of renewable feedstocks (i.e., lignocellulosic biomass) is nowadays an area of utmost interest. In this context, the implementation of fast, expeditious and cost-effective methodologies for the modification of these naturally occurring compounds is becoming a prerequisite. With this aim, the application of microwaves has gained progressive attention in laboratories for making a range of high-added value sugars derivative scaffolds. The advantages of microwaves are numerous, and include enhancement of reaction rates and yields, combined with improved regio-, chemo- and anomeric selectivities. 相似文献
93.
94.
Zhongrui Chen Maxime Bert Simon Pascal Gabriel Canard Olivier Siri 《Tetrahedron letters》2019,60(38):151024
The transamination reaction of 2,5-diaminobenzoquinonediimine (QDI) with ethylenediamine gave fluorescent 1,2,3,4-tetrahydropyrazino[2,3-g]quinoxaline (1). When the same reaction was carried out with N,N’-bis(aminoethyl)-1,3-propanediamine, a novel cationic quinoxalinium species (2) was isolated, which can be further condensed with p-cyanobenzaldehyde to afford a benzimidazolo-fused quinoxaline dye (3) that is a water-soluble fluorophore in the UV–visible range. 相似文献
95.
Simon L. Rssler Benson J. Jelier Pascal F. Tripet Andrej Shemet Gunnar Jeschke Antonio Togni Erick M. Carreira 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(2):536-541
Electron‐transfer photocatalysis provides access to the elusive and unprecedented N‐pyridyl radical cation from selected N‐substituted pyridinium reagents. The resulting C(sp2)?H functionalization of (hetero)arenes furnishes versatile intermediates for the development of valuable aminated aryl scaffolds. Mechanistic studies that include the first spectroscopic evidence of a spin‐trapped N‐pyridyl radical adduct implicate SET‐triggered, pseudo‐mesolytic cleavage of the N?X pyridinium reagents mediated by visible light. 相似文献
96.
Billon Sophie Sardini Paul Leblond Sylvain Fichet Pascal 《Journal of Radioanalytical and Nuclear Chemistry》2019,320(3):699-709
Journal of Radioanalytical and Nuclear Chemistry - A large set of key parameters is provided to use in decommissioning operations, the conversion method fully described in the companion paper... 相似文献
97.
Cloé?Desmet Andrea?Valsesia Arianna?Oddo Giacomo?Ceccone Valentina?Spampinato Fran?ois?Rossi Pascal?ColpoEmail author 《Journal of nanoparticle research》2017,19(3):117
Characterisation of engineered nanomaterials (NMs) is of outmost importance for the assessment of the potential risks arising from their extensive use. NMs display indeed a large variety of physico-chemical properties that drastically affect their interaction with biological systems. Among them, hydrophobicity is an important property that is nevertheless only slightly covered by the current physico-chemical characterisation techniques. In this work, we developed a method for the direct characterisation of NM hydrophobicity. The determination of the nanomaterial hydrophobic character is carried out by the direct measurement of the affinity of the NMs for different collectors. Each collector is an engineered surface designed in order to present specific surface charge and hydrophobicity degrees. Being thus characterised by a combination of surface energy components, the collectors enable the NM immobilisation with surface coverage in relation to their hydrophobicity. The experimental results are explained by using the extended DLVO theory, which takes into account the hydrophobic forces acting between NMs and collectors. 相似文献
98.
Matteo Bianchini Maria Roca‐Ayats Pascal Hartmann Torsten Brezesinski Jürgen Janek 《Angewandte Chemie (International ed. in English)》2019,58(31):10434-10458
This Review provides a comprehensive overview of LiNiO2 (LNO), almost 30 years after its introduction as a cathode active material. We aim to highlight the physicochemical peculiarities that make LNO a complex material in every aspect. We specifically stress the effect of the Li off‐stoichiometry (Li1?zNi1+zO2) on every property of LNO, especially the electrochemical ones. The key instability issues that plague the compound and the strategies that have been implemented so far to overcome them are discussed in detail. Finally, the open questions that remain to be addressed by the scientific community are summarized, and the research directions that seem the most promising to enable LNO to be fully exploited are elucidated. 相似文献
99.
Sabine Devautour‐Vinot Eriyakkadan S. Sanil Amine Geneste Vanessa Ortiz Pascal G. Yot Jong‐San Chang Guillaume Maurin 《化学:亚洲杂志》2019,14(20):3561-3565
Post‐synthesis modification of MIL‐101(Cr)‐NO2 was explored in order to decorate the organic backbone by propyl‐sulfonic groups, with the aim to incorporate mobile and acidic protons for solid‐state proton electrolyte applications. The resulting solid switched from insulating towards proton superconductive behavior under humidity, while the conductivity recorded at 363 K and 95 % relative humidity reached 4.8×10?3 S cm?1. Propitiously, the impregnation of the material by strong acidic molecules (H2SO4) further boosted the proton conductivity performances up to the remarkable σ value of 1.3×10?1 S cm?1 at 363 K/95 % RH, which reaches the performances of the best proton conductive MOF reported so far. 相似文献