Results 11 to 20 of about 2,404 (97)
Verifying the modes of cyclic conjugation in tetrabenzo[bc,ef,op,rs]circumanthracene [PDF]
Journal of the Serbian Chemical Society, 2012 Cyclic conjugation in the "empty" central ring of tetrabenzo- [bc,ef,op,rs]circumanthracene (TBCA) is stronger than in its neighboring "nonempty" rings, contradicting the predictions of Kekulè-structure-based theoretical models.
Gutman Ivan +3 more
doaj +1 more source
The electronic structure of benzene from a tiling of the correlated 126-dimensional wavefunction
Nature Communications, 2020 The electronic structure of benzene has been a test bed for competing theories along the years. Here the authors show via quantum chemistry calculations that the wavefunction of benzene can be partitioned into tiles which show that the two electron spins
Yu Liu +3 more
doaj +1 more source
, 2018 Creativity has often been declared, especially by philosophers, as the last frontier of science. The assumption is that it will defy explanation forever.
Kronfeldner, Maria
core +2 more sources
The effect of atomic-scale defects and dopants on graphene electronic structure [PDF]
, 2011 Graphene, being one-atom thick, is extremely sensitive to the presence of adsorbed atoms and molecules and, more generally, to defects such as vacancies, holes and/or substitutional dopants.
Casolo, Simone +2 more
core +3 more sources
Interplay of Kekulé distortions and laser fields in graphene
Condensed Matter Physics, 2023 We study the interplay between a Kekulé patterned distortion in monolayer graphene and a monochromatic laser irradiation, focusing in the long wavelength approximation of its Landau level structure.
A. Lopez, F. Mireles
doaj +1 more source
Uniaxial Strain Induced Topological Phase Transition in Bismuth-Tellurohalide-Graphene Heterostructures [PDF]
, 2019 We explore the electronic structure and topological phase diagram of heterostructures formed of graphene and ternary bismuth tellurohalide layers. We show that mechanical strain inherently present in fabricated samples could induce a topological phase ...
Koltai, János +3 more
core +2 more sources
From scientific knowledge construction to teaching. Several explanations about benzene structure [PDF]
, 2012 La revisión de la evolución histórica para representar cierto compuesto, en este caso benceno, pone de manifiesto las diferentes teorías que pugnaron por dar las mejores explicaciones, mostrando una visión dinámica acerca de la construcción del ...
Farré, Andrea Soledad +1 more
core +1 more source
BNB/NBN‐Phenalenyl‐2'‐deoxyuridines as a Fluorophore–Quencher Pair in DNA
Angewandte Chemie, EarlyView.Two BN‐chromophore‐extended nucleosides containing electronically complementary BNB‐ and NBN‐doped phenalenyls were synthesised and incorporated into deoxyribonucleic acid (DNA) oligonucleotides. These chromophores act as an efficient fluorophore–quencher pair under aqueous conditions.
Sarah Lutz +6 more
wiley +2 more sources
Nature Communications, 2023 Light propagates in various ways depending on environment, including uniform medium, surface/interface and photonic crystals, which appears ubiquitously in daily life and has been exploited for advanced optics technology.
Xing-Xiang Wang +5 more
doaj +1 more source
Radical‐Based On‐Surface Transformation of Nonplanar Aromatics Into Nonbenzenoid Nanographenes
Angewandte Chemie, EarlyView.Formation of radicals in nonplanar hydrocarbons through thermally induced dehydrogenation leads to molecular transformation via intramolecular radical‐based cyclization and dimerization, leading to formation of nonbenzenoid nanographenes. ABSTRACT On‐surface synthesis has emerged as a powerful tool for atomically precise C─C bond formation, enabling ...
Daniel Rothhardt +8 more
wiley +2 more sources