Results 11 to 20 of about 267,449 (298)

Modification of chiral dimethyl tartrate through transesterification : immobilisation on POSS and enantioselectivity reversion in Sharpless asymmetric epoxidation [PDF]

open access: yes, 2010
Modification of dimethyl tartrate has been investigated through transesterification with aminoalcohols to provide reactive functionalities for the covalent bonding of chiral tartrate to polyhedral oligomeric silsesquioxanes.
Van Grieken, Rafael   +4 more
core   +4 more sources

Chiral Skyrmions Interacting with Chiral Flowers

open access: yesNano Letters, 2023
20 pages, 4 ...
Xichao Zhang   +7 more
openaire   +3 more sources

Recent Research Progress of Chiral Small Molecular Antitumor-Targeted Drugs Approved by the FDA From 2011 to 2019

open access: yesFrontiers in Oncology, 2021
Chiral drugs usually contain chiral centers, which are present as single enantiomers or racemates. Compared with achiral drugs, they have significant advantages in safety and efficacy with high stereoselectivity. Of these drugs, chirality not only exerts
Xuetong Chu, Yizhi Bu, Xiaoping Yang
doaj   +1 more source

Near- and Far-Field Excitation of Topological Plasmonic Metasurfaces

open access: yesPhotonics, 2020
The breathing honeycomb lattice hosts a topologically non-trivial bulk phase due to the crystalline-symmetry of the system. Pseudospin-dependent edge states, which emerge at the interface between trivial and non-trivial regions, can be used for the ...
Matthew Proctor   +5 more
doaj   +1 more source

Chiral porphyrin assemblies

open access: yesAggregate, 2023
Porphyrins are among the most important macrocycles because they perform many essential functions in living systems and serve as building blocks in many functional materials. Incorporating the chirality into porphyrins can aid biomimetic research and the
Li Zhang   +3 more
doaj   +1 more source

Chiral fermion reversal in chiral crystals [PDF]

open access: yesNature Communications, 2019
AbstractIn materials chiral fermions such as Weyl fermions are characterized by nonzero chiral charges, which are singular points of Berry curvature in momentum space. Recently, new types of chiral fermions beyond Weyl fermions have been discovered in structurally chiral crystals CoSi, RhSi and PtAl.
Hang Li   +15 more
openaire   +4 more sources

Constructions of chiral polytopes of small rank [PDF]

open access: yes, 2011
An abstract polytope of rank n is said to be chiral if its automorphism group has precisely two orbits on the flags, such that adjacent flags belong to distinct orbits. The present paper describes a general method for deriving new finite chiral polytopes
Egon Schulte   +5 more
core   +1 more source

Effects of cadmium stress on seed germination and physiological-biochemical characteristics in okra: a comparative study of red and green varieties [PDF]

open access: yesPeerJ
Previous study has demonstrated that okra (Abelmoschus esculentus (L.) Moench) is capable of accumulating cadmium (Cd) in both plants and fruits. However, there is still little known about the physiological responses of different okra cultivars to Cd ...
Wanwan Wang   +6 more
doaj   +2 more sources

New synthetic uses for chiral 1,3-dioxolan-4-ones [PDF]

open access: yes, 2008
The behaviour of chiral 1,3-dioxolan-4-ones, derived from reaction of mandelic and lactic acid with pivalaldehyde, as chiral acyl anion equivalents has been examined.
Power, Lynn A.
core   +2 more sources

CHIRAL PARTNERS IN A CHIRALLY BROKEN WORLD [PDF]

open access: yesInternational Journal of Modern Physics A, 2009
The isovector–vector and the isovector–axial-vector current are related by a chiral transformation. These currents can be called chiral partners at the fundamental level. In a world where chiral symmetry was not broken, the corresponding current-current correlators would show the same spectral information.
Leupold, Stefan, Wagner, Markus
openaire   +2 more sources

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