A supramolecular system of tetrathiafulvalene, assembled by hydrogen bonding, ionic coordination bonding and topological cooperation

2006 ◽  
Vol 30 (8) ◽  
pp. 1140 ◽  
Author(s):  
Qin-Yu Zhu ◽  
Hai-Hong Lin ◽  
Jie Dai ◽  
Guo-Qing Bian ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular System ◽  
Coordination Bonding

A Supramolecular Thickener Based on Non-Covalent Enhancement Mechanism

2021 ◽  
Author(s):  
Yingxian Ma ◽  
Liqiang Huang ◽  
Zhi Zhu ◽  
Yurou Du ◽  
Jie Lai ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
High Speed ◽  
Salt Resistance ◽  
Supramolecular System ◽  
Self Healing ◽  
Fracturing Fluid ◽  
Enhancement Mechanism ◽  
Binary Polymer ◽  
Hydrogen Bonding Interactions ◽  
One Step

Abstract Inspired by non-covalent enhancement mechanism, we introduced glycinamide-conjugated monomer (NAGA) with dual-amide in one side group to amplify the hydrogen bonding interactions. Via one-step free radical polymerization strategy, we prepared a type of supramolecular thickener based on binary polymer. With NMR, FT-IR and SEM results’ help, we determined that PNAGA-AM system had unique bis-amide structure of glycinamide-conjugated monomer. As a result, the synthesized polymer could generate a much denser structure based on the high-ordered multiple hydrogen bonding with lower molecular weight (Mn = 778,400 g/mol), increasing the strength and stability of the chains. PNAGA-AM system had good thickening and temperature-resistant properties. The thickener viscosity of PNAGA-AM(3.0wt%) had twice as much as that of corresponding PAM system. And the viscosity of the 1.5 wt% solution prepared by PNAGA-AM could maintain 74 mPa·s at 150 °C. Meanwhile, the supramolecular system showed excellent salt resistance and self-healing performance with the non-covalent/hydrogen bonding interactions and physical entanglements. The viscosity of the PNAGA-AM system did not drop but increase in high salinity (≤ 300,000 mg/L salinity), and the maximum viscosity could increase nearly 44 % compared with the initial situation. In addition, the self-healing efficiency was over 100 % at 120 °C. Overall, the fracturing fluid system based on PNAGA-AM system could maintain outstanding rheological properties under extreme conditions and showed brilliant recovery performance, to make up the disadvantages of currently used fracturing fluid. It is expected to mitigate potential fluid issues caused by low water quality, harsh downhole temperatures and high-speed shearing.

scholarly journals Self-healing and shape memory functions exhibited by supramolecular liquid-crystalline networks formed by combination of hydrogen bonding interactions and coordination bonding

2021 ◽  
Author(s):  
Junya Uchida ◽  
Masafumi Yoshio ◽  
Takashi Kato
Keyword(s):  
Hydrogen Bonding ◽  
Shape Memory ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Building Blocks ◽  
Self Healing ◽  
New Approach ◽  
Hydrogen Bonding Interactions ◽  
Coordination Bonding ◽  
Molecular Building Blocks

We here report a new approach to develop self-healing shape memory supramolecular liquid-crystalline (LC) networks through self-assembly of molecular building blocks via combination of hydrogen bonding and coordination bonding. We...

Origin of the considerably high thermal stability of cyclo-N5− containing salts at ambient conditions

CrystEngComm ◽  
2019 ◽  
Vol 21 (23) ◽  
pp. 3592-3604 ◽  
Author(s):  
Fangbao Jiao ◽  
Chaoyang Zhang
Keyword(s):  
Thermal Stability ◽  
Hydrogen Bonding ◽  
High Thermal Stability ◽  
Ambient Conditions ◽  
Coordination Bonding ◽  
Π Stacking ◽  
Salt Crystals ◽  
Thermal Stability Of

Ionization, conjugation, hydrogen bonding, coordination bonding and π–π stacking consolidate the cyclo-N5− caged in salt crystals.

Interrogating heterobimetallic co-catalytic responses for the electrocatalytic reduction of CO2 using supramolecular assembly

2016 ◽  
Vol 45 (40) ◽  
pp. 15942-15950 ◽  
Author(s):  
Charles W. Machan ◽  
Clifford P. Kubiak
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Assembly ◽  
Supramolecular System ◽  
Electrocatalytic Reduction ◽  
Hydrogen Bonding Interactions ◽  
Reduction Of Co2 ◽  
Electrocatalytic Reduction Of Co2

The use of hydrogen-bonding interactions to direct the non-covalent assembly of a heterobimetallic supramolecular system with Re and Mn bipyridine-based electrocatalysts is reported.

Stimuli-responsive supramolecular materials: photo-tunable properties and molecular recognition behavior

2016 ◽  
Vol 7 (4) ◽  
pp. 795-806 ◽  
Author(s):  
Cheng-Wei Huang ◽  
Pei-Wei Wu ◽  
Wei-Hung Su ◽  
Chao-Yuan Zhu ◽  
Shiao-Wei Kuo
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Recognition ◽  
Surface Relief ◽  
Supramolecular System ◽  
Stimuli Responsive ◽  
Supramolecular Materials ◽  
Laser Illumination ◽  
Tunable Properties ◽  
Responsive Behavior ◽  
Surface Relief Gratings

A supramolecular system stabilized through complementary hydrogen bonding and displaying stimuli-responsive behavior has been fabricated into “recordable” and “rewritable” surface relief gratings operated under laser illumination.

scholarly journals Construction of hydrogen bonding and coordination networks based on ethynylpyridine-appended nucleobases

CrystEngComm ◽  
2021 ◽  
Author(s):  
Christophe Kahlfuss ◽  
Eliot Starck ◽  
Elsa Tufenkjian ◽  
Nathalie Kyritsakas ◽  
Abdelaziz Jouaiti ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Networks ◽  
Coordination Networks ◽  
Coordination Bonding

A series of ethynylpyridine-appended nucleobases have been designed, synthesized, characterized and employed for the formation of crystalline molecular networks by hydrogen/coordination bonding.

Hydrogen bonding in liquid methanol at ambient conditions and at high pressure

2000 ◽  
Vol 98 (3) ◽  
pp. 125-134 ◽  
Author(s):  
T. Weitkamp, J. Neuefeind, H. E. Fisch
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Ambient Conditions
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