Results 1 to 10 of about 73,139 (120)
Molecules, 2023 An unprecedented N-alkylation of 3-nitroindoles with para-quinone methides was developed for the first time. Using potassium carbonate as the base, a wide range of structurally diverse N-diarylmethylindole derivatives were obtained with moderated to good
Jian-Qiang Zhao +8 more
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Active nematic multipoles: Flow responses and the dynamics of defects and colloids
Frontiers in Physics, 2023 We introduce a general description of localised distortions in active nematics using the framework of active nematic multipoles. We give the Stokesian flows for arbitrary multipoles in terms of differentiation of a fundamental flow response and describe ...
Alexander J. H. Houston +3 more
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CALCULATED VIBRATION FREQUENCIES AND IR ABSORPTION INTENSITIES OF [6] CYCLACENE (CHIRAL) MOLECULE [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2011 .:Density Functional Theory (DFT) of the type (B3LYP) and a Gaussian basis (6-311G) was applied for calculating the vibration frequencies and IR absorption intensities for normal coordinates of the ([6] Cyclacene (Chiral), with (D3d) symmetry) molecule ...
REHAB M. KUBBA
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Entropy, 2022 Free electron systems are ubiquitous in nature and have demonstrated intriguing effects in their collective interactions with weak electric and magnetic fields, especially in aqueous environments. Starting from the Dirac Hamiltonian, a fully relativistic
Philip Kurian
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Directional Plasmonic Excitation by Helical Nanotips
Nanomaterials, 2021 The phenomenon of coupling between light and surface plasmon polaritons requires specific momentum matching conditions. In the case of a single scattering object on a metallic surface, such as a nanoparticle or a nanohole, the coupling between a ...
Leeju Singh +3 more
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Amplification of Chirality in Photopatterned 3D Nanostructures of Chiral/Achiral Mixtures
Applied Sciences, 2022 The dispersion of a chiral polymer in a polymerizable matrix can amplify the chirality of the material, and a helical conformation of the chiral material within the polymerized SU-8 excessively increased the circular dichroism.
Hongsub Jee +2 more
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Frontiers 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
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Near- and Far-Field Excitation of Topological Plasmonic Metasurfaces
Photonics, 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
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Aggregate, 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
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Chirality as a Feature of the Crystal Structure of Lanthanide Ion Complexes—Some Simple Examples
Crystals, 2023 Single-crystal X-ray structure determinations are reported for four lanthanide complexes, [Dy(bipy)2Cl2(OH2)2]Cl.H2O (bipy = 2,2′-bipyridine), 1; [La2(phen)2(O2CCH3)4(NO3)2] (phen = 1,10-phenanthroline), 2; [Lu(terpy)(O2CCH3)3].NaNO3 (terpy = 2,2′;6′,2 ...
Lioubov I. Semenova +2 more
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