Results 41 to 50 of about 142,813 (213)
A Model for Granular Texture with Steric Exclusion
, 2002 We propose a new method to characterize the geometrical texture of a granular packing at the particle scale including the steric hindrance effect. This method is based on the assumption of a maximum disorder (entropy) compatible both with strain-induced ...
F. Calvetti +8 more
core +1 more source
Highly efficient synthesis of the tricyclic core of Taxol by cascade metathesis [PDF]
, 2014 An efficient enantioselective synthesis of the ABC tricyclic core of the anticancer drug Taxol is reported. The key step of this synthesis is a cascade metathesis reaction, which leads in one operation to the required tricycle if appropriate fine-tuning ...
Aldegunde M. J. +39 more
core +3 more sources
Effect of Alkyl Side Chain Length on the Lithium-Ion Conductivity for Polyether Electrolytes
Frontiers in Chemistry, 2022 The design guidelines of polymer structure to effectively promote lithium-ion conduction within the polymer electrolytes (PEs) are crucial for its practical use.
Ryansu Sai +4 more
doaj +1 more source
Relaxation dynamics in a transient network fluid with competing gel and glass phases
, 2015 We use computer simulations to study the relaxation dynamics of a model for oil-in-water microemulsion droplets linked with telechelic polymers. This system exhibits both gel and glass phases and we show that the competition between these two arrest ...
Berthier, Ludovic +3 more
core +1 more source
APL Energy, 2023 All-polymer solar cells (all-PSCs) have attracted enormous attention and achieved significant progress in recent years due to their long-term stability and excellent film stretchability.
Mengzhen Sha +6 more
doaj +1 more source
N,N'-(p-Phenylene)dibenzamide (PPDB) [PDF]
, 1977 C20N202H16, monoclinic, P2~/c, a = 18.065(1), b = 5.247(1), c = 8.027(1) A, fl = 93.99 (1) °, Z = 2. The crystal structure has been refined by least-squares techniques. R w = 7.3%.
Gaymans, R.J., Harkema, S.
core +8 more sources
Catalytic enantioselective construction of axial chirality in 1,3-disubstituted allenes
Nature Communications, 2019 Highly enantioselective synthesis of allenes has been relying, so far, on the steric hindrance of substrates. Here the authors achieve excellent stereocontrol in the synthesis of chiral allenes with a palladium-DTBM-SEGPHOS catalytic system in a non ...
Shihua Song +3 more
doaj +1 more source
Two-Dimensional Controlled Syntheses of Polypeptide Molecular Brushes via N-Carboxyanhydride Ring-Opening Polymerization and Ring-Opening Metathesis Polymerization. [PDF]
, 2017 Well-defined molecular brushes bearing polypeptides as side chains were prepared by a "grafting through" synthetic strategy with two-dimensional control over the brush molecular architectures.
Borguet, Yannick P +7 more
core +1 more source
Interfacial assignment of branched-alkyl benzene sulfonates: A molecular simulation
AIP Advances, 2015 A molecular dynamics simulation was conducted to analyze orientations of sodium branched-alkyl benzene sulfonates molecules at nonane/water interface, which is helpful to design optimal surfactant structures to achieve ultralow interfacial tension (IFT).
Zi-Yu Liu +6 more
doaj +1 more source
Molecules, 2022 APCs (aliphatic polycarbonates) are one of the most important types of biodegradable polymers and widely used in the fields of solid electrolyte, biological medicine and biodegradable plastics.
Jun Feng +5 more
doaj +1 more source