Results 41 to 50 of about 1,415,660 (303)

Hydrogen-Bonding-Induced Fluorescence: Water-Soluble and Polarity-Independent Solvatochromic Fluorophores

open access: yes, 2016
Fluorophores with emission wavelengths that shift depending on their hydrogen-bonding microenvironment in water would be fascinating tools for the study of biological events.
Masae Sugai (1538092)   +2 more
core   +1 more source

Hydrogen-Bonding-Mediated Selective Hydrogenation of Aromatic Ketones over Pd/C in Ionic Liquids at Room Temperature

open access: yes, 2021
Selective hydrogenation of aromatic ketones without hydrogenation of aromatic rings over Pd/C is very interesting but still challenging. Herein, we report a hydrogen-bonding-mediated strategy for selective hydrogenation of aryl ketones to either aryl ...
Xiaoyu Zhang   +19 more
core   +1 more source

Hydrogen-Bonding-Assisted Ketimine Formation of Benzophenone Derivatives

open access: yes, 2018
The favorable effect of 2-hydroxyphenyl groups for ketimine formation with benzophenone was demonstrated by combining computational and experimental studies.
Sumin Jang (5932508)   +7 more
core   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

The Interplay of Inter- and Intramolecular Hydrogen Bonding in Ether Alcohols Related to n-Octanol

open access: yesMolecules
n-Octanol and related ether alcohols are studied via molecular dynamics (MD) simulations using the two classical all-atom force fields OPLS-AA and CHARMM. The ether alcohols studied possess one ether functionality separated by varying n carbon atoms from
Markus M. Hoffmann   +2 more
doaj   +1 more source

Unraveling chirality transfer mechanism by structural isomer-derived hydrogen bonding interaction in 2D chiral perovskite

open access: yesNature Communications, 2023
In principle, the induced chirality of hybrid perovskites results from symmetry-breaking within inorganic frameworks. However, the detailed mechanism behind the chirality transfer remains unknown due to the lack of systematic studies.
Jaehyun Son   +11 more
doaj   +1 more source

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

Hydrogen-Bonding Interactions in Polymer–Organic Solvent Mixtures

open access: yes, 2022
Polymer solubility in organic solvents generally is predicted by the Hildebrand solubility parameter (δ) approach based on the “like dissolves like” principle.
Ya-Fei Yuan (12695870)   +3 more
core   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Hydrogen bonding in 1-carboxypropanaminium nitrate

open access: yesActa Crystallographica Section E, 2012
There are two crystallographically independent cations and two anions in the asymmetric unit of the title compound, C4H5NO2+·NO3−. In the crystal, the 1-carboxypropanaminium cations and nitrate anions are linked to each other through ...
Rim Benali-Cherif   +3 more
doaj   +1 more source

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