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191.
N Zijlstra C Blum IM Segers-Nolten MM Claessens V Subramaniam 《Angewandte Chemie (International ed. in English)》2012,51(35):8821-8824
Bleaching proteins: Single-molecule photobleaching approaches and sub-stoichiometric labeling with fluorophores give insight into the number of monomers that form a specific α-synuclein oligomer. The results show that this α-synuclein oligomer is present as a single, well-defined species consisting of 31 monomers. 相似文献
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Garcia P Evanno Y George P Sevrin M Ricci G Malacria M Aubert C Gandon V 《Organic letters》2011,13(8):2030-2033
Bimolecular cobalt-catalyzed [2 + 2 + 2] cycloadditions between yne-ynamides and nitriles afford bicyclic 3- or 4-aminopyridines in up to 100% yield. The high regioselectivity observed depends on the substitution pattern at the starting ynamide. Aminopyridines bearing TMS and Ts groups are efficiently deprotected in an orthogonal fashion. 相似文献
194.
Mireille Perec Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(5):m140-m144
The title copper complex, [Cu(H2P2O7)(C15H11N3)]2·4.5H2O, consists of two very similar independent Cu(Tpy)H2P2O7 monomeric units (Tpy is 2,2′:6′,2′′‐terpyridine) plus four and a half water molecules of hydration, some of which are disordered. Tpy units bind through the usual triple bite via their N atoms, and the H2P2O72− anions coordinate through two O atoms from two different phosphate units. Each independent CuN3O2 chromophore can be described as a slightly deformed square pyramid, with one of them having a sixth, semicoordinated, O atom from a centrosymmetrically related CuN3O2 unit in a weakly bound second apical position suggesting an octahedral environment for the cation and weak dimerization of the molecule. The two independent complex molecules are connected via two strong O—H...O interactions between the phosphate groups to form hydrogen‐bonded dinuclear units, further linked into [111] columns, resulting in a very complex three‐dimensional supramolecular structure through a variety of classical and nonclassical hydrogen bonds, as well as π–π interactions. 相似文献
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Dr. Eduardo Cueto Diaz Dr. Sébastien Picard Maxime Klausen Vincent Hugues Paolo Pagano Dr. Emilie Genin Dr. Mireille Blanchard‐Desce 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(31):10848-10859
Tandem uncaging systems in which a two‐photon absorbing module and a cage moiety, linked via a phosphorous clip, that act together by Förster resonance energy transfer (FRET) have been developed. A library of these compounds, using different linkers and cages (7‐nitroindolinyl or nitroveratryl) has been synthesized. The investigation of their uncaging and two‐photon absorption properties demonstrates the scope and versatility of the engineering strategy towards efficient two‐photon cages and reveals surprising cooperative and topological effects. The interactions between the 2PA module and the caging moiety are found to promote cooperative effects on the 2PA response while additional processes that enhance the uncaging efficiency are operative in well‐oriented nitroindoline‐derived dyads. These synergic effects combine to lead to record two‐photon uncaging cross‐section values (i.e., up to 20 GM) for uncaging of carboxylic acids. 相似文献
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In this paper, we study an interface transport scheme of a two‐phase flow of an incompressible viscous immiscible fluid. The problem is discretized by the characteristics method in time and finite elements method in space. The interface is captured by the level set function. Appropriate boundary conditions for the problem of mold filling are investigated, a new natural boundary condition under pressure effect for the transport equation is proposed, and an algorithm for computing the solution is presented. Finally, numerical experiments show and validate the effectiveness of the proposed scheme. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
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