Results 1 to 10 of about 2,322,207 (98)

Hydrogen Bonding in Self-Healing Elastomers

open access: yesACS Omega, 2021
In the past decade, the self-healing elastomers based on multiple hydrogen bonding have attracted ample attention due to their rich chemical structures, adjustable mechanical properties, fast healing speed, and high healing efficiency. Through prolonging
Zhulu Xie   +3 more
semanticscholar   +1 more source

Asymmetric nucleophilic fluorination under hydrogen bonding phase-transfer catalysis

open access: yesScience, 2018
H-bond to deliver fluoride Simple fluoride salts are theoretically convenient reagents for carbon-fluorine bond formation. In practice, they are often insoluble in the solvents that dissolve their reaction partners. Pupo et al.
G. Pupo   +10 more
semanticscholar   +1 more source

The nature of hydrogen-bonding interaction in the prototypic hybrid halide perovskite, tetragonal CH3NH3PbI3

open access: yesScientific Reports, 2016
In spite of the key role of hydrogen bonding in the structural stabilization of the prototypic hybrid halide perovskite, CH3NH3PbI3 (MAPbI3), little progress has been made in our in-depth understanding of the hydrogen-bonding interaction between the MA ...
June Ho Lee   +3 more
semanticscholar   +1 more source

Preferred Hydrogen-Bonding Partners of Cysteine: Implications for Regulating Cys Functions.

open access: yesJournal of Physical Chemistry B, 2016
The hydrogen-bonding interactions of cysteine, which can serve as a hydrogen-bond donor and/or acceptor, play a central role in cysteine's diverse functional roles in proteins.
K. Mazmanian   +4 more
semanticscholar   +1 more source

O–H hydrogen bonding promotes H-atom transfer from α C–H bonds for C-alkylation of alcohols

open access: yesScience, 2015
A trio helps activate C-H bonds in alcohols Enzymes can accelerate chemical reactions by activating specific portions of a molecule through well-placed H bonds. Jeffrey et al. showcase the power of H-bonding in a synthetic context.
J. Jeffrey   +2 more
semanticscholar   +1 more source

Tetraalkylammonium Salts as Hydrogen-Bonding Catalysts.

open access: yesAngewandte Chemie, 2015
Although the hydrogen-bonding ability of the α hydrogen atoms on tetraalkylammonium salts is often discussed with respect to phase-transfer catalysts, catalysis that utilizes the hydrogen-bond-donor properties of tetraalkylammonium salts remains unknown.
S. Shirakawa   +6 more
semanticscholar   +1 more source

Cellulose and the role of hydrogen bonds: not in charge of everything

open access: yesCellulose, 2021
In the cellulose scientific community, hydrogen bonding is often used as the explanation for a large variety of phenomena and properties related to cellulose and cellulose based materials.
M. Wohlert   +5 more
semanticscholar   +1 more source

A versatile hydrogel network–repairing strategy achieved by the covalent-like hydrogen bond interaction

open access: yesScience Advances, 2022
Hydrogen bond engineering is widely exploited to impart stretchability, toughness, and self-healing capability to hydrogels. However, the enhancement effect of conventional hydrogen bonds is severely limited by their weak interaction strength. In nature,
Zilong Han   +5 more
semanticscholar   +1 more source

Reversible polymers formed from self-complementary monomers using quadruple hydrogen bonding.

open access: yesScience, 1997
Units of 2-ureido-4-pyrimidone that dimerize strongly in a self-complementary array of four cooperative hydrogen bonds were used as the associating end group in reversible self-assembling polymer systems.
R. Sijbesma   +7 more
semanticscholar   +1 more source

Adhesion and Surface Interactions of a Self‐Healing Polymer with Multiple Hydrogen‐Bonding Groups

open access: yes, 2014
The surface properties and self‐adhesion mechanism of self‐healing poly(butyl acrylate) (PBA) copolymers containing comonomers with 2‐ureido‐4[1H]‐pyrimidinone quadruple hydrogen bonding groups (UPy) are investigated using a surface forces apparatus (SFA)
Ali Faghihnejad   +7 more
semanticscholar   +1 more source

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