Results 11 to 20 of about 323,304 (307)

Hydrogen-Bonding-Driven 3D Supramolecular Assembly of Peptidomimetic Zipper

open access: yes, 2018
Hydrogen-bonding-driven three-dimensional (3D) assembly of a peptidomimetic zipper has been established for the first time by using an α/AApeptide zipper that assembles into a de novo lattice arrangement through two layers of hydrogen-bonded linker ...
Shengqian Ma (1348764)   +10 more
core   +3 more sources

A multinuclear solid state NMR, density functional theory and X-Ray diffraction study of hydrogen bonding in Group I hydrogen dibenzoates [PDF]

open access: yes, 2013
An NMR crystallographic approach incorporating multinuclear solid state NMR (SSNMR), X-ray structure determinations and density functional theory (DFT) are used to characterise the H bonding arrangements in benzoic acid (BZA) and the corresponding Group ...
Iuga, Dinu   +26 more
core   +1 more source

Hydrogen-Bonding-Assisted Exogenous Nucleophilic Reagent Effect for β‑Selective Glycosylation of Rare 3‑Amino Sugars

open access: yes, 2019
Challenges for stereoselective glycosylation of deoxy sugars are notorious in carbohydrate chemistry. We herein report a novel strategy for the construction of the less investigated β-glycosidic bonds of 3,5-trans-3-amino-2,3,6-trideoxy sugars (3,5-trans-
Bingbing Xu (346321)   +11 more
core   +5 more sources

Hydrogen-Bonding-Mediated Molecular Vibrational Suppression for Enhancing the Fluorescence Quantum Yield Applicable for Visual Phenol Detection

open access: yes, 2021
It is generally accepted that while efficient suppression of molecular vibration is inevitable for purely organic phosphors due to their long emission lifetime in the regime of 1 ms or longer, fluorophores having a lifetime in the nanoseconds regime are
Byoung Min Ko (11662635)   +8 more
core   +2 more sources

2,3-Dimethyl-1H-imidazol-3-ium chloride

open access: yesIUCrData, 2020
The title salt, C5H9N2+·Cl−, exhibits multiple hydrogen-bonding interactions between the cationic imidazole moiety and the chloride anion. The protonated aromatic nitrogen moiety displays the shortest hydrogen-bonding interactions while weaker hydrogen ...
Grace Anderson   +3 more
doaj   +1 more source

A pH‐Switchable Triple Hydrogen‐Bonding Motif

open access: yesChemistryOpen, 2020
A stimuli responsive linear hydrogen bonding motif, capable of in situ protonation and deprotonation, has been investigated. The interactions of the responsive hydrogen bonding motif with complementary partners were examined through a series of 1H NMR ...
Dr. Heather M. Coubrough   +4 more
doaj   +1 more source

Supercritical Water is not Hydrogen Bonded [PDF]

open access: yesAngewandte Chemie, 2020
AbstractThinking about water is inextricably linked to hydrogen bonds, which are highly directional in character and determine the unique structure of water, in particular its tetrahedral H‐bond network. Here, we assess if this common connotation also holds for supercritical water.
Philipp Schienbein, Dominik Marx
openaire   +4 more sources

Effect of hydrogen bonding and complexation with metal ions on the fluorescence of luotonin A [PDF]

open access: yes, 2013
Fluorescence characteristics of a biologically active natural alkaloid, luotonin A (LuA), were studied by steady-state and time-resolved spectroscopic methods.
Biczók, László, Miskolczy, Zsombor
core   +1 more source

Triplet–Triplet Energy Transfer Study in Hydrogen Bonding Systems

open access: yesCHIMIA, 2015
The 2,6-diiodoBodipy–styrylBodipy hydrogen bonding system was prepared to study the effect of hydrogen bonding on the triplet–triplet-energy-transfer (TTET) process. 2,6-DiiodoBodipy linked with N-acetyl-2,6-diaminopyridine (D-2) was used as the
Zhijia Wang, Jianzhang Zhao, Song Guo
doaj   +1 more source

Redox-Modulated Fluorescent Halogen Bonding and Hydrogen Bonding Anion Sensing

open access: yes, 2023
Anion sensing via either optical or electrochemical readouts has separately received enormous attention, however a judicious combination of the advantages of both modalities remains almost entirely unexplored. Toward this goal we herein disclose a series
Paul D., Beer   +4 more
core   +1 more source

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