Remarkable enhancement of ambient-air electrical conductivity of the perylenediimide π-stacks isolated in the flexible films of a hydrogen-bonded polymer

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64240-64246 ◽  
Author(s):  
Mustafa Supur ◽  
Ayhan Yurtsever ◽  
Ümit Akbey
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Bonding ◽  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Ambient Air ◽  
Π Interactions ◽  
Flexible Films ◽  
Hydrogen Bonded

N,N′-di(2-(trimethylammoniumiodide)ethylene) perylenediimide (TAIPDI), forming extensive π-stacks through the strong π–π interactions of large π-planes, was isolated in the hydrogen-bonding milieu of polyvinyl alcohol (PVA) from aqueous solutions.

Hydrogen-bonding networks of purine derivatives and their bilayers for guest intercalation

CrystEngComm ◽  
2016 ◽  
Vol 18 (1) ◽  
pp. 62-67
Author(s):  
Yoona Jang ◽  
Seo Yeon Yoo ◽  
Hye Rin Gu ◽  
Yu Jin Lee ◽  
Young Shin Cha ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Two Dimensional ◽  
Purine Derivatives ◽  
Guest Molecules ◽  
Π Interactions ◽  
Hydrogen Bonding Networks ◽  
Hydrogen Bonded

6-Chloro-9-propyl-purin-2-amine (pr-GCl) forms two-dimensional hydrogen-bonded networks which in turn stack via π–π interactions, leading to the formation of bilayers that can accommodate organic guest molecules.

The hydrogen-bonded complex bis(tert-butylammonium) 2,6-dichlorophenolate 2,4-dichlorophenol–2,4-dichlorophenolate tetrahydrofuran disolvate containing a chiralR53(10) hydrogen-bonded ring as a supramolecular synthon

2016 ◽  
Vol 72 (10) ◽  
pp. 720-723 ◽  
Author(s):  
Xiao-Qing Cai ◽  
Bei Tian ◽  
Jian-Nan Zhang ◽  
Zhi-Min Jin
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Functional Groups ◽  
High Probability ◽  
Internal Symmetry ◽  
Supramolecular Synthon ◽  
Π Interactions ◽  
Graph Set ◽  
Hydrogen Bonded

A fixed hydrogen-bonding motif with a high probability of occurring when appropriate functional groups are involved is described as a `supramolecular hydrogen-bonding synthon'. The identification of these synthons may enable the prediction of accurate crystal structures. The rare chiral hydrogen-bonding motifR53(10) was observed previously in a cocrystal of 2,4,6-trichlorophenol, 2,4-dichlorophenol and dicyclohexylamine. In the title solvated salt, 2C4H12N+·C6H3Cl2O−·(C6H3Cl2O−·C6H4Cl2O)·2C4H8O, five components, namely twotert-butylammonium cations, one 2,4-dichlorophenol molecule, one 2,4-dichlorophenolate anion and one 2,6-dichlorophenolate anion, are bound by N—H...O and O—H...O hydrogen bonds to form a hydrogen-bonded ring, with the graph-set motifR53(10), which is further associated with two pendant tetrahydrofuran molecules by N—H...O hydrogen bonds. The hydrogen-bonded ring has internal symmetry, with a twofold axis running through the centre of the 2,6-dichlorophenolate anion, and is isostructural with a previous and related structure formed from 2,4-dichlorophenol, dicyclohexylamine and 2,4,6-trichlorophenol. In the title crystal, helical columns are built by the alignment and twisting of the chiral hydrogen-bonded rings, along and across thecaxis, and successive pairs of rings are associated with each other through C—H...π interactions. Neighbouring helical columns are inversely related and, therefore, no chirality is sustained, in contrast to the previous case.

scholarly journals Raman Spectroscopy for the Competition of Hydrogen Bonds in Ternary (H2O–THF–DMSO) Aqueous Solutions

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3666
Author(s):  
Liu ◽  
Zhang ◽  
Huang ◽  
Wu ◽  
Ouyang
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bond ◽  
Raman Spectroscopy ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Aqueous Solutions ◽  
Dimethyl Sulfoxide ◽  
Water Molecules ◽  
Bonding Theory ◽  
Hydrogen Bonded

The effects of hydrogen bonds on the molecular structure of water-tetrahydrofuran (H2O–THF), water-dimethyl sulfoxide (H2O–DMSO), and water-tetrahydrofuran-dimethyl sulfoxide (H2O–THF–DMSO) in binary aqueous solutions and ternary aqueous solutions were studied using Raman spectroscopy. The results indicate that in the binary aqueous solution, the addition of THF and DMSO will generate hydrogen bonds with water molecules, resulting in changes in the peak positions of S=O bonds and C–O bonds. Compared with the binary aqueous solutions, the hydrogen bonds between DMSO and THF, and the hydrogen bonds between DMSO and H2O in the ternary aqueous solutions are competitive, and the hydrogen bond competition is susceptible to water content. In addition, the formation of hydrogen bonds will destroy the fully hydrogen-bonded water and make it change to the partially hydrogen-bonded water. By fitting the spectra into the three Gaussian components assigned to water molecules with different hydrogen bonding (HB) environments, these spectral features are interpreted by a mechanism that H2O in different solution systems has equal types of water molecules with similar HB degrees-fully hydrogen-bonded H2O (FHW) and partially hydrogen-bonded H2O (PHW). The ratio of the intensity transition from FHW to PHW is determined based on Gaussian fitting. Therefore, the variation of hydrogen bond competition can be supplemented by the intensity ratio of PHW/FHW ((IC2 + IC3)/IC1). This study provides an experimental basis for enriching the hydrogen bonding theory of multivariate aqueous solution systems.

Heteroaggregation behavior of graphene oxide on Zr-based metal–organic frameworks in aqueous solutions: a combined experimental and theoretical study

2017 ◽  
Vol 5 (38) ◽  
pp. 20398-20406 ◽  
Author(s):  
Jie Li ◽  
Qunyan Wu ◽  
Xiangxue Wang ◽  
Zhifang Chai ◽  
Weiqun Shi ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Theoretical Study ◽  
Metal Organic Frameworks ◽  
Acid Base ◽  
Π Interactions ◽  
Metal Organic

Electrostatic attractions combined with the non-negligible π–π interactions, hydrogen bonding and acid–base interactions lead to the heteroaggregation between GO and Zr based MOFs.

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.

scholarly journals C—H...X(X= O, N or π) interactions in benzyl carbamate

2012 ◽  
Vol 68 (3) ◽  
pp. o114-o118 ◽  
Author(s):  
Ignasi Mata ◽  
Elies Molins ◽  
Mercedes Amat ◽  
Núria Llor ◽  
Begoña Checa
Keyword(s):  
Hydrogen Bonding ◽  
Interaction Energy ◽  
Crystal Packing ◽  
Π Interactions ◽  
Hydrogen Bonded

The crystal packing and interaction energy of benzyl carbamate, C8H9NO2, have been analysed in detail by thePIXELmethod. Benzyl carbamate forms layers of hydrogen-bonded molecules, with the layers connected by weaker C—H...π interactions. According to thePIXELanalysis, combinations of C—H...X(X= O, N or π) interactions are comparable in energy with hydrogen bonding. These interactions are necessary for explaining the geometry and the assembly of the layers.

RADIATION-INDUCED DECOMPOSITION AND POLYMERIZATION OF POLYVINYL ALCOHOL IN AQUEOUS SOLUTIONS

2013 ◽  
Vol 12 (7) ◽  
pp. 1323-1328 ◽  
Author(s):  
Lujun Chen ◽  
Weihua Sun ◽  
Jinping Tian ◽  
Jianlong Wang ◽  
Shijun He
Keyword(s):  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Radiation Induced ◽  
Induced Decomposition

Viscosity, electrical conductivity and density of the system ammonium nitrate-dimethyl sulphoxide

1984 ◽  
Vol 49 (5) ◽  
pp. 1109-1115
Author(s):  
Jindřich Novák ◽  
Zdeněk Kodejš ◽  
Ivo Sláma
Keyword(s):  
Electrical Conductivity ◽  
Aqueous Solutions ◽  
Ammonium Nitrate ◽  
Transport Properties ◽  
Calcium Nitrate ◽  
Dimethyl Sulphoxide ◽  
Present System ◽  
Empirical Equations ◽  
Concentrated Solutions ◽  
Nitrate Solutions

The density, viscosity, and electrical conductivity of highly concentrated solutions of ammonium nitrate in dimethyl sulphoxide have been determined over the temperature range 10-60 °C and the concentration range 7-50 mol% of the salt. The variations in the quantities as a function of temperature and concentration have been correlated by empirical equations. A comparison is made between the transport properties for the present system, aqueous solutions of ammonium nitrate, and calcium nitrate solutions in dimethyl sulphoxide.

Intramolecular Hydrogen Bonding Facilitates Electrocatalytic Reduction of Nitrite in Aqueous Solutions

2019 ◽  
Vol 58 (14) ◽  
pp. 9443-9451 ◽  
Author(s):  
Song Xu ◽  
Hyuk-Yong Kwon ◽  
Daniel C. Ashley ◽  
Chun-Hsing Chen ◽  
Elena Jakubikova ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Aqueous Solutions ◽  
Intramolecular Hydrogen Bonding ◽  
Electrocatalytic Reduction ◽  
Intramolecular Hydrogen

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).

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