Results 51 to 60 of about 219,728 (324)

Halogen Bonding in Nucleic Acid Complexes

open access: yes, 2017
Halogen bonding (X-bonding) has attracted notable attention among noncovalent interactions. This highly directional attraction between a halogen atom and an electron donor has been exploited in knowledge-based drug design. A great deal of information has
Kolář, Michal H., Tabarrini, Oriana
core   +1 more source

Photoswitching Conduction in Framework Materials

open access: yesAdvanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez   +4 more
wiley   +1 more source

Comparison of diamond growth with different gas mixtures in microwave plasma asssited chemical vapor deposition (MWCVD)

open access: yesMaterials Research, 2003
In this work we study the influence of oxygen addition to several halocarbon-hydrogen gas systems. Diamond growth have been performed in a high power density MWCVD reactor built in our laboratory. The growth experiments are monitored by argon actinometry
Evaldo J. Corat   +3 more
doaj   +1 more source

Halogen Bonding in Two‐Dimensional Crystal Engineering

open access: yesChemistryOpen, 2020
Halogen bonds, which provide an intermolecular interaction with moderate strength and high directionality, have emerged as a promising tool in the repertoire of non‐covalent interactions.
Dr. Joan Teyssandier   +2 more
doaj   +1 more source

Enhanced enantioselectivity in halogen-bonding catalysis

open access: yesCommunications Chemistry, 2023
Chiral halogen-bonding catalysts have emerged as a new approach towards asymmetric catalysis, but enantioselectivities have thus far remained low. Now, fine-tuning the substrate–catalyst halogen–halogen interactions is shown to significantly enhance ...
Victoria Richards
doaj   +1 more source

Biomimetic Iridescent Skin: Robust Prototissues Spontaneously Assembled from Photonic Protocells

open access: yesAdvanced Functional Materials, EarlyView.
Uniform nanoparticles are induced to form arrays (photonic crystals) in the cores of biopolymer capsules, endowing these ‘protocells’ with structural color. These protocells are then assembled into large self‐standing objects, i.e., prototissues, with robust mechanical properties as well as iridescent optical properties.
Medha Rath   +6 more
wiley   +1 more source

Comparison of Shear Bond Strengths of Orthodontic Brackets Bonded with Three Different Curing Techniques

open access: yesTurkish Journal of Orthodontics, 2005
The aim of our study was to compare shear bond strengths of orthodontic brackets bonded with chemically cured, halogen light cured and LED cured adhesive systems. 45 extracted human premolar teeth were randomly divided into 3 groups.
Hakan Türkkahraman   +1 more
doaj   +1 more source

Abnormalities of the Halogen Bonds in the Complexes between Y2CTe (Y = H, F, CH3) and XF (X = F, Cl, Br, I)

open access: yesMolecules, 2022
In this work, the hydrogen bonds and halogen bonds in the complexes between Y2CTe (Y = H, F, CH3) and XF (X = F, Cl, Br, I) have been studied by quantum chemical calculations. We found three interesting abnormalities regarding the interactions.
Ya-Qian Wang   +3 more
doaj   +1 more source

Coordination networks incorporating halogen-bond donor sites and azobenzene groups [PDF]

open access: yes, 2016
Two Zn coordination networks, [Zn(1)(Py)2]2(2-propanol)n (3) and [Zn(1)2(Bipy)2](DMF)2n (4), incorporating halogen-bond (XB) donor sites and azobenzene groups have been synthesized and fully characterized.
Fernandez-Palacio F.   +6 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

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