scholarly journals Competition Between Steric Hindrance and Hydrogen Bonding in the Formation of Supramolecular Bottle Brush Polymers

2013 ◽  
Vol 46 (19) ◽  
pp. 7911-7919 ◽  
Author(s):  
Sylvain Catrouillet ◽  
Cécile Fonteneau ◽  
Laurent Bouteiller ◽  
Nicolas Delorme ◽  
Erwan Nicol ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Steric Hindrance ◽  
Bottle Brush ◽  
Brush Polymers

scholarly journals Effects of alkanolamine solvents on the aggregation states of reactive dyes in concentrated solutions and the properties of the solutions

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10929-10934
Author(s):  
Chuangui Cao ◽  
Zhihui Zhao ◽  
Yong Qi ◽  
Hui Peng ◽  
Kuanjun Fang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Steric Hindrance ◽  
Reactive Dyes ◽  
Concentrated Solutions ◽  
Weak Hydrogen Bonding ◽  
Dye Aggregation

The solvent, DEA, reduces the dye aggregation that may be caused by the weak hydrogen bonding and relatively smaller steric hindrance effect.

scholarly journals Tension Amplification in Tethered Layers of Bottle-Brush Polymers

2016 ◽  
Vol 49 (5) ◽  
pp. 1950-1960 ◽  
Author(s):  
Gary M. Leuty ◽  
Mesfin Tsige ◽  
Gary S. Grest ◽  
Michael Rubinstein
Keyword(s):  
Bottle Brush ◽  
Brush Polymers

scholarly journals Computer simulation of bottle-brush polymers with flexible backbone: Good solvent versus theta solvent conditions

2011 ◽  
Vol 135 (16) ◽  
pp. 164903 ◽  
Author(s):  
Panagiotis E. Theodorakis ◽  
Hsiao-Ping Hsu ◽  
Wolfgang Paul ◽  
Kurt Binder
Keyword(s):  
Computer Simulation ◽  
Bottle Brush ◽  
Theta Solvent ◽  
Brush Polymers

scholarly journals Kinetics of Free Radical Polymerization of N-Substituted Amides and Their Structural Implications

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Anca Aldea ◽  
Ana-Maria Albu ◽  
Alina Nicolescu ◽  
Victorita Tecuceanu
Keyword(s):  
Hydrogen Bonding ◽  
Free Radical ◽  
Nitrogen Atom ◽  
Steric Hindrance ◽  
Solvent Polarity ◽  
Hydrogen Bonding Interaction ◽  
H Nmr ◽  
Bonding Interaction ◽  
Kinetics Of ◽  
C Nmr

Two N-substituted amides (N-acryloyl morpholine and N-methyl-N-vinylacetamide) were polymerized in different solvents using radical initiator. The tacticity of obtained polymers was determined by 400 MHz1H-NMR and13C-NMR. At a given temperature, the syndiotacticity increased with increasing the solvent polarity. This solvent effect may be related to the hydrogen bonding interaction among solvent, monomer, and/or growing species. A peculiar aspect regards the steric hindrance at the nitrogen atom.

Interplay of Steric Hindrance and Hydrogen Bonding To Restrict Mono-O-substitutedp-tert-Butylcalix[6]arenes in Cone Conformation

1998 ◽  
Vol 63 (4) ◽  
pp. 1079-1085 ◽  
Author(s):  
J. Oriol Magrans ◽  
Ana M. Rincón ◽  
Félix Cuevas ◽  
Javier López-Prados ◽  
Pedro M. Nieto ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Steric Hindrance ◽  
Cone Conformation

scholarly journals Core-Clickable PEG-Branch-Azide Bivalent-Bottle-Brush Polymers by ROMP: Grafting-Through and Clicking-To

2011 ◽  
Vol 133 (3) ◽  
pp. 559-566 ◽  
Author(s):  
Jeremiah A. Johnson ◽  
Ying Y. Lu ◽  
Alan O. Burts ◽  
Yeon-Hee Lim ◽  
M. G. Finn ◽  
...  
Keyword(s):  
Grafting Through ◽  
Bottle Brush ◽  
Brush Polymers

Aromatic amides. VII. Steric hindrance to hydrogen bonding in ortho-substituted acetanilides

1972 ◽  
Vol 25 (3) ◽  
pp. 639 ◽  
Author(s):  
BD Andrews ◽  
AJ Poynton ◽  
ID Rae
Keyword(s):  
Hydrogen Bonding ◽  
Magnetic Resonance ◽  
Steric Hindrance ◽  
Proton Magnetic Resonance ◽  
Intramolecular Hydrogen Bonding ◽  
Intramolecular Hydrogen ◽  
Magnetic Resonance Spectra

A series of 2-substituted 3,5-dimethylanilines and their N-acetyl derivatives have been synthesized, and their proton magnetic resonance spectra recorded. Intramolecular hydrogen bonding between the amide N-H and the 2-substituent is disturbed by steric hindrance of the 2-substituent only in the case of the 2-nitro, 2-acetyl, and 2-methoxycarbonyl substituents.

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