Results 31 to 40 of about 430,530 (226)

A fast large-signal model for coupled-cavity TWTS. [PDF]

, 1988
A fast and accurate one-dimensional large-signal model for coupled-cavity TWTs has been developed that can be used interactively for the optimization of a TWT design. Different modeling techniques for enhancing the speed of the large-signal model with no
Carter, Richard G., Srivastava, V.
core   +4 more sources

10,14-(Cyanomethyl)-6,18-dimethyl-1,5,9,14,19,20-hexaazatricyclo[14.2.1.15,8]icosa-6,8(20), 16(19), 17-tetraene

Molbank, 2003
n ...
Sghir El Kadiri, Abdelkrim Ramdani, Rachid Touzani, Farid Berhili   +3 more
doaj   +1 more source

The Determination of Protonation Constants of Peptidomimetic Cyclophanes in Binary Methanol-Water Mixtures

Journal of Analytical Methods in Chemistry, 2016
The protonation constants of new group of peptidomimetic cyclophanes with valine or phenylalanine moieties incorporated into the macrocyclic skeleton as well as their linear analogues were determined by potentiometric measurements in solutions of ...
Piotr Seliger, Danuta Tomczyk, Grzegorz Andrijewski, Ewa Tomal   +3 more
doaj   +1 more source

Regulating endoplasmic reticulum localization of a fluorescent NBD adamantane conjugate by Cucurbit [7]uril

Chemical Physics Impact, 2021
Intracellular localization of small molecule organic fluorescent probes by supra-molecular control is a fascinating approach. Here, we report an adamantane conjugated nitrobenzoxadiazole (NBD-Ad)-based fluorescent probe that efficiently labels the ...
Tanoy Dutta, Shrobona Banerjee, Apurba Lal Koner   +2 more
doaj   +1 more source

Glucopyranoside Recognition by Polypyridine-Macrocyclic Receptors Possessing a Wide Cavity with a Flexible Linkage

, 2016
New polypyridine-macrocyclic receptors for glucopyranosides were designed and synthesized. The artificial receptors possess a terpyridine skeleton as a hydrogen-bonding site and a flexible polyoxyethylene chain as a bridge for the macrocyclic structure ...
Hiroyuki Nakazumi (1679743), Junya Chiba (2431027), Masahiko Inouye (1433956)   +2 more
core   +1 more source

Active Metal Template Synthesis of Rotaxanes From BINOL‐Phosphate Macrocycles

Angewandte Chemie, EarlyView.
The use of macrocyclic BINOL‐phosphates allows for the active metal template synthesis of [2]rotaxanes via Cu(I)‐mediated alkyne‐azide cycloaddition. DFT calculations, control experiments, and kinetic experiments support a dinuclear phosphate‐Cu2 intermediate.
Nikolai Brodt, Sophia Stadtfeld, Somayyeh Kheirjou, Tibor Schumski, Adrian M. Bialowons, Dennis Jansen, Felix Niemeyer, Torsten Schaller, Gebhard Haberhauer, Jan Riebe, Jochen Niemeyer   +10 more
wiley   +2 more sources

8,12-Dibenzyl-4,16-dimethyl-1,3,8,12,17,18-hexaazatricyclo[12.2.1.13,6]octadeca-4,6(18), 14(17), 15-tetraene

Molbank, 2003
n ...
Sghir El Kadiri, Abdelkrim Ramdani, Farid Berhili, Rachid Touzani   +3 more
doaj   +1 more source

An Operative Electrostatic Slipping Mechanism along Macrocycle Flexibility Accelerates Guest Sliding during pseudo‐Rotaxane Formation

ChemistryOpen, 2022
A pseudo‐rotaxane is a host−guest complex composed of a linear molecule encircled by a macrocyclic ring. These complexes can be assembled by sliding the host over the guest terminal groups.
Dr. Aldo C. Catalán, Axel A. Loredo, Dr. Ruy Cervantes, Prof. Dr. Jorge Tiburcio   +3 more
doaj   +1 more source

Polyoxa- and Polyazamacrocycles Incorporating 6,7-Diaminoquinoxaline Moiety: Synthesis and Application as Tunable Optical pH-Indicators in Aqueous Solution

Molecules, 2023
Synthetic approach to fluorescent polyaza- and polyoxadiazamacrocycles comprising a structural fragment of 6,7-diamino-2,3-diphenylquinoxaline has been elaborated using Pd-catalyzed amination providing target compounds in yields up to 77%.
Igor A. Kurashov, Alisa D. Kharlamova, Anton S. Abel, Alexei D. Averin, Irina P. Beletskaya   +4 more
doaj   +1 more source

Photochromism change by conformation control in macrocyclic boronic ester cavity [PDF]

Acta Crystallographica Section A Foundations and Advances, 2014
N-salicylideneaniline derivatives are known to show photochromism by UV light, and it depends on the molecular conformation in the crystal. The twisted molecule is photochromic but the planar one is not[1,2]. N-salicylidene-2-aminopyridine (2SAP) always has a planar conformation due to the chemical structure without steric hindrance, therefore 2SAP is ...
Kohei Johmoto, Hidehiro Uekusa, Yuji Kikuchi, Hiroki Takahagi, Kosuke Ono, Nobuharu Iwasawa   +5 more
openaire   +1 more source