Results 101 to 110 of about 5,976 (269)

Progress on the Application of Polymers of Intrinsic Microporosity for the Adsorption of Organic Contaminants

open access: yesChemistryOpen, Volume 15, Issue 4, April 2026.
The pictorial illustration of the applications of polymers of intrinsic microporosity extraordinary porous organic polymers with high surface areas, pore radii, pore volumes, high permeability, high diffusivity, high selectivity, and high thermal stability, as suitable filters or purifiers for water contaminated with pharmaceutical and organic dyes ...
Martins O. Omorogie
wiley   +1 more source

Aromaticity‐Dependent Memristive Switching

open access: yesAdvanced Electronic Materials
In recent years, memristors have drawn attention as non‐volatile memory devices for advanced computing engineering. The features of memristors, such as hysteresis, high resistance state to low resistance state ratio, retention time, etc., are determined ...
Ewelina Cechosz   +5 more
doaj   +1 more source

Foszforheterociklusok szintézise és hasznosítása = The synthesis and use of phosporus heterocycles [PDF]

open access: yes, 2007
A kutatás három fő szálon futott, egyrészt az 5- és 6-tagú, másrészt a 7- és 8-tagú - ez utóbbi esetben áthidalt - P-heterociklusok területén, harmadrészt egy inverz Wittig-típusú reakció témájában.
Balázsdi Szabó, Nóra   +18 more
core  

Perimeter ring currents in benzenoids from Pauling bond orders [PDF]

open access: yes, 2016
It is shown that the ring currents in perimeter hexagonal rings of Kekulean benzenoids, as estimated within the Randić conjugated-circuit model, can be calculated directly without tedious pairwise comparison of Kekulé structures or Kekulé counting for ...
Bird, W.H.   +3 more
core   +1 more source

A reversible single-molecule switch based on activated antiaromaticity

open access: yesScience Advances, 2017
We use the concept of aromaticity to create an electrochemically activated single-molecule switch. Single-molecule electronic devices provide researchers with an unprecedented ability to relate novel physical phenomena to molecular chemical structures ...
Xiaodong Yin   +8 more
semanticscholar   +1 more source

TOPOLOGIA DOS ORBITAIS MOLECULARES DE POLIENOS PARA DEDUZIR ENERGIAS RELATIVAS E AVALIAR AROMATICIDADE

open access: yesQuímica Nova
A didactic alternative approach is proposed for deducing the molecular orbital topology of acyclic and cyclic polyenes and then evaluating their bonding, antibonding, and nonbonding character.
Silvio Cunha
doaj   +1 more source

Synthesis of diverse indole-containing scaffolds by gold(I)-catalyzed tandem reactions of 3-propargylindoles initiated by 1,2-indole migrations: scope and computational studies [PDF]

open access: yes, 2010
Similar to propargylic carboxylates and sulphides, 3- propargylindoles undergo 1,2-indole migrations under cationic gold(I)- catalysis. The intermediate Aucarbenoid complex may evolve through different pathways depending on the substituents at the
Fernández Rodríguez, Manuel A.   +8 more
core   +1 more source

Open-shell magnetic states in alternant and non-alternant nanographenes: Conceptions and misconceptions

open access: yesCarbon Trends
In contrast to alternant, in non-alternant nanographenes (NGRs) and graphene nanoribbons (GNRs) no “sublattice structure” can be defined, associated with significant conceptual and computational simplifications. This leads to some fundamental differences
Aristides D. Zdetsis
doaj   +1 more source

Hydrogenation Properties of the TiBx Structures

open access: yes, 2011
Titanium borates show promissing hydrogen storage characteristics. Structural relaxation around individual hydrogen atoms and the binding energies are studied by means of the density functional theory methods for a number of hydrogenated TiB2, TiB and ...
Makridis, S. S.   +6 more
core   +1 more source

Oxidative insertion of amines into conjugated macrocycles: transformation of antiaromatic norcorrole into aromatic azacorrole

open access: hybrid, 2023
Sha Li   +6 more
openalex   +2 more sources

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