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排序方式: 共有111条查询结果,搜索用时 31 毫秒
91.
92.
Dr. Gabriella Cavallo Prof. Dr. Giancarlo Terraneo Alessandro Monfredini Dr. Marco Saccone Prof. Dr. Arri Priimagi Dr. Tullio Pilati Prof. Dr. Giuseppe Resnati Prof. Dr. Pierangelo Metrangolo Prof. Dr. Duncan W. Bruce 《Angewandte Chemie (International ed. in English)》2016,55(21):6300-6304
Unconventional ionic liquid crystals in which the liquid crystallinity is enabled by halogen‐bonded supramolecular anions [CnF2 n+1‐I???I???I‐CnF2 n+1]? are reported. The material system is unique in many ways, demonstrating for the first time 1) ionic, halogen‐bonded liquid crystals, and 2) imidazolium‐based ionic liquid crystals in which the occurrence of liquid crystallinity is not driven by the alkyl chains of the cation. 相似文献
93.
Weak solutions to a hydrodynamic model for semiconductors and relaxation to the drift-diffusion equation 总被引:7,自引:0,他引:7
Pierangelo Marcati Roberto Natalini 《Archive for Rational Mechanics and Analysis》1995,129(2):129-145
We investigate the relaxation problem for the hydrodynamic isentropic Euler-Poisson system when the momentum relaxation time tends to zero. Very sharp estimates on the solutions, independent of the relaxation time, are obtained and used to establish compactness. 相似文献
94.
Dr. Hiroki Takezawa Dr. Takashi Murase Prof. Dr. Giuseppe Resnati Prof. Dr. Pierangelo Metrangolo Prof. Dr. Makoto Fujita 《Angewandte Chemie (International ed. in English)》2015,54(29):8411-8414
The confined space inside a self‐assembled cage enhanced halogen bonding (XB) between iodoperfluorocarbons (XB donors) and NO3? anions or H2O molecules (XB acceptors), as confirmed by NMR spectroscopy in solution and by X‐ray crystallography in the solid state. The cavity also bound an XB donor–acceptor pair, C6F3I3 and C6H5NMe2, in a selective pairwise fashion. 相似文献
95.
Caronna T Liantonio R Logothetis TA Metrangolo P Pilati T Resnati G 《Journal of the American Chemical Society》2004,126(14):4500-4501
The halogen bonding and the pi...pi stacking interactions induce the noncovalent self-assembly of modules into photoreactive supramolecular architecture. The pi...pi interaction pre-organizes the template, and the halogen bonding aligns the olefins to conform to the topochemical principle for photoreaction. The UV irradiation of the crystal resulted in a cyclization product with quantitative yield and stereospecificity. 相似文献
96.
Donald D. BurtonFrancesca Fontana Pierangelo Metrangolo Tullio PilatiGiuseppe Resnati 《Tetrahedron letters》2003,44(4):645-648
N?I halogen bondings drive the intermolecular recognition between (E)-1,2-diiodo-1,2-difluoroethene, which work as bidentate electron acceptor, and TMEDA or 4,4′-dipyridyl, which work as bidentate electron donors. The presence of 1D infinite chains in both co-crystals has been established through X-ray analyses. 相似文献
97.
Ilenia Viola Pierangelo Metrangolo Giuseppe Resnati Roberto Cingolani 《Journal of fluorine chemistry》2007,128(10):1335-1339
Two different perfluoropolyether-based fluids, namely the unfunctionalized GALDEN SV90® and the dihydroxy derivative FOMBLIN Z-DOL® 2000 were employed as liquid samples in a poly(dimethylsiloxane) (PDMS) microfluidic setup, fabricated by soft-lithography techniques. The results of our investigation were compared with the behaviour of the low viscosity and high-fragility polyurethane structural adhesive (NOA72®), that is well known as an excellent material for the fabrication of sub-micrometer structures by soft-lithography techniques, and whose structural elastic properties inside restricted geometric systems have been recently investigated. 相似文献
98.
Valentina Dichiarante Claudia Pigliacelli Pierangelo Metrangolo Francesca Baldelli Bombelli 《Chemical science》2021,12(5):1632
Nanoparticle (NP) self-assembly has led to the fabrication of an array of functional nanoscale systems, having diverse architectures and functionalities. In this perspective, we discuss the design and application of NP suprastructures (SPs) characterized by nanoconfined compartments in their self-assembled framework, providing an overview about SP synthetic strategies reported to date and the role of their confined nanocavities in applications in several high-end fields. We also set to give our contribution towards the formation of more advanced nanocompartmentalized SPs able to work in dynamic manners, discussing the opportunities of further advances in NP self-assembly and SP research.This perspective gives an outlook on the design of interparticle confined nanocavities in self-assembled NP systems and their functional relevance. 相似文献
99.
Donatella Donatelli Pierangelo Marcati 《Transactions of the American Mathematical Society》2004,356(5):2093-2121
In this paper we investigate the diffusive zero-relaxation limit of the following multi-D semilinear hyperbolic system in pseudodifferential form:
We analyze the singular convergence, as , in the case which leads to a limit system of parabolic type. The analysis is carried out by using the following steps:
We analyze the singular convergence, as , in the case which leads to a limit system of parabolic type. The analysis is carried out by using the following steps:
- (i)
- We single out algebraic ``structure conditions' on the full system, motivated by formal asymptotics, by some examples of discrete velocity models in kinetic theories.
- (ii)
- We deduce ``energy estimates ', uniformly in , by assuming the existence of a symmetrizer having the so-called block structure and by assuming ``dissipativity conditions' on .
- (iii)
- We assume a Kawashima type condition and perform the convergence analysis by using generalizations of compensated compactness due to Tartar and Gérard.
100.
Metrangolo P Pilati T Resnati G Stevenazzi A 《Chemical communications (Cambridge, England)》2004,(13):1492-1493
The halogen bonding driven self-assembly of 1,4-dicyanobutane and 1,6-dicyanohexane with a range of perfluorinated telechelic diiodoalkanes yields layered 1D, infinite chain co-crystals. The structure and metrics of these co-crystals are remarkably predictable. 相似文献