A New Quadruple Hydrogen-Bonding Module with a DDAA Array: Formation of a Stable Homodimer without Competition from Undesired Hydrogen-Bonded Dimers

2009 ◽  
Vol 11 (19) ◽  
pp. 4342-4345 ◽  
Author(s):  
Yosuke Hisamatsu ◽  
Naohiro Shirai ◽  
Shin-ichi Ikeda ◽  
Kazunori Odashima
Keyword(s):  
Hydrogen Bonding ◽  
Quadruple Hydrogen Bonding ◽  
Hydrogen Bonded

Supramolecular organic network assembled from quadruple hydrogen-bonding motifs

2016 ◽  
Vol 52 (39) ◽  
pp. 6597-6600 ◽  
Author(s):  
Xue Huang ◽  
Yan-Chao Zhao ◽  
Bao-Hang Han
Keyword(s):  
Hydrogen Bonding ◽  
Organic Polymer ◽  
Quadruple Hydrogen Bonding ◽  
Hydrogen Bonded

A rigid triptycene derivative with three 2-ureido-4[1H]-pyrimidinone (UPy) terminals was employed to construct a supramolecular hydrogen-bonded organic polymer (HOP-1).

Supramolecular crowns: a new class of cyclic hydrogen-bonded cavitands

2019 ◽  
Vol 6 (5) ◽  
pp. 611-617 ◽  
Author(s):  
Qiang Chen ◽  
Xiaoshi Su ◽  
Edvinas Orentas ◽  
Qixun Shi
Keyword(s):  
Hydrogen Bonding ◽  
New Class ◽  
Quadruple Hydrogen Bonding ◽  
Novel Design ◽  
Hydrogen Bonded

A novel design of highly preorganized bicyclic monomers, based on quadruple hydrogen bonding motifs, is proposed to access noncovalent cavitands with large internal volumes and interesting shapes.

Quadruple Hydrogen Bonded Nanocarbon Networks for High Performance Dispersant-Free Conducting Pastes

2014 ◽  
Vol 1700 ◽  
pp. 91-95
Author(s):  
Joong Tark Han ◽  
Jeong In Jang ◽  
Sua Choi ◽  
Seon Hee Seo ◽  
Seung Yol Jeong ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Bonding ◽  
Flexible Electronics ◽  
High Performance ◽  
Colloidal Dispersion ◽  
Dilute Solutions ◽  
Straightforward Method ◽  
Electrochemical Devices ◽  
Quadruple Hydrogen Bonding ◽  
Hydrogen Bonded

ABSTRACTColloidal dispersion of nanocarbon (NC) materials in dilute solutions or pastes is prerequisite for applications of NC-based electrodes from flexible electronics and flexible conducting fibers to electrochemical devices. Here, we show a straightforward method for fabricating NC suspensions with >10% weight concentrations in absence of organic dispersants. The method involves introducing supramolecular quadruple hydrogen bonding motifs into the NC materials without sacrificing the electrical conductivity.

Photoresponsive supramolecular polymers based on quadruple hydrogen-bonding and a photochromic azobenzene motif

2018 ◽  
Vol 9 (44) ◽  
pp. 5395-5401 ◽  
Author(s):  
Shaobo Tan ◽  
Ye Sha ◽  
Tianyu Zhu ◽  
Md Anisur Rahman ◽  
Chuanbing Tang
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Polymers ◽  
Supramolecular Polymer ◽  
Quadruple Hydrogen Bonding ◽  
Hydrogen Bonded

A photoresponsive quadruple hydrogen-bonded supramolecular polymer was constructed using photochromic azobenzene and ureidopyrimidinone motifs.

Theoretical study of hydrogen bonding interactions in substituted nitroxide radicals

2021 ◽  
Author(s):  
Thufail M. Ismail ◽  
Neetha Mohan ◽  
P. K. Sajith
Keyword(s):  
Hydrogen Bonding ◽  
Interaction Energy ◽  
Electrostatic Potential ◽  
Molecular Electrostatic Potential ◽  
Theoretical Study ◽  
Nitroxide Radicals ◽  
Hydrogen Bonding Interactions ◽  
Bonded Complexes ◽  
Hydrogen Bonded

Interaction energy (Eint) of hydrogen bonded complexes of nitroxide radicals can be assessed in terms of the deepest minimum of molecular electrostatic potential (Vmin).

scholarly journals Quadruple Hydrogen Bond-Containing A-AB-A Triblock Copolymers: Probing the Influence of Hydrogen Bonding in the Central Block

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4705
Author(s):  
Boer Liu ◽  
Xi Chen ◽  
Glenn A. Spiering ◽  
Robert B. Moore ◽  
Timothy E. Long
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Microphase Separation ◽  
Triblock Copolymers ◽  
Random Copolymer ◽  
Thermomechanical Properties ◽  
Structure Property ◽  
Scanning Calorimetry ◽  
Central Block ◽  
Quadruple Hydrogen Bonding

This work reveals the influence of pendant hydrogen bonding strength and distribution on self-assembly and the resulting thermomechanical properties of A-AB-A triblock copolymers. Reversible addition-fragmentation chain transfer polymerization afforded a library of A-AB-A acrylic triblock copolymers, wherein the A unit contained cytosine acrylate (CyA) or post-functionalized ureido cytosine acrylate (UCyA) and the B unit consisted of n-butyl acrylate (nBA). Differential scanning calorimetry revealed two glass transition temperatures, suggesting microphase-separation in the A-AB-A triblock copolymers. Thermomechanical and morphological analysis revealed the effects of hydrogen bonding distribution and strength on the self-assembly and microphase-separated morphology. Dynamic mechanical analysis showed multiple tan delta (δ) transitions that correlated to chain relaxation and hydrogen bonding dissociation, further confirming the microphase-separated structure. In addition, UCyA triblock copolymers possessed an extended modulus plateau versus temperature compared to the CyA analogs due to the stronger association of quadruple hydrogen bonding. CyA triblock copolymers exhibited a cylindrical microphase-separated morphology according to small-angle X-ray scattering. In contrast, UCyA triblock copolymers lacked long-range ordering due to hydrogen bonding induced phase mixing. The incorporation of UCyA into the soft central block resulted in improved tensile strength, extensibility, and toughness compared to the AB random copolymer and A-B-A triblock copolymer comparisons. This study provides insight into the structure-property relationships of A-AB-A supramolecular triblock copolymers that result from tunable association strengths.

Use of Quadruple Hydrogen Bonding as the Switching Phase in Thermo- and Light-Responsive Shape Memory Hydrogel

2021 ◽  
Author(s):  
Yufang Song ◽  
Yiming Chen ◽  
Ran Chen ◽  
Hongji Zhang ◽  
Dongjian Shi ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Shape Memory ◽  
Quadruple Hydrogen Bonding
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