Highly Sensitive Magnetic Effects Induced by Hydrogen-Bonding Interactions in a High-Spin Metallosupramolecular Fe4II [2×2] Grid-Type Complex

2009 ◽  
Vol 15 (11) ◽  
pp. 2500-2503 ◽  
Author(s):  
Artur R. Stefankiewicz ◽  
Jean-Marie Lehn
Keyword(s):  
Hydrogen Bonding ◽  
High Spin ◽  
Magnetic Effects ◽  
Hydrogen Bonding Interactions ◽  
Type Complex ◽  
Highly Sensitive

scholarly journals Experimental Sensing and DFT Mechanism of Zn(II) Complex for Highly Sensitive and Selective Detection of Acetone

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 324
Author(s):  
Mohd. Muddassir ◽  
Mohammad Usman ◽  
Abdullah Alarifi ◽  
Mohd. Afzal ◽  
Khulud Abdullah Alshali ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Energy Barrier ◽  
Association Constant ◽  
Theoretical Calculations ◽  
Selective Detection ◽  
Acetone Molecule ◽  
Hydrogen Bonding Interactions ◽  
Highly Sensitive ◽  
Perchlorate Complex ◽  
Selective Sensor

In the present work, a new Zn(II) perchlorate complex with 2,2’–bipyridyl of formulation {[Zn(bipy)2(H2O)](ClO4)2} (1) was obtained and well analyzed. This chemosensor was evaluated as a selective sensor for acetone among the several different organic solvents(CH3OH, EtOH, i–PrOH, i–BuOH, CHCl3, CH2Cl2, CCl4, C6H6, C7H8, C8H10, C2H3N, C3H7NO, C4H8O2, C3H6O3) in a fluorescence turn–off response in accordance with theoretical calculations. Sensing experiments were performed at ambient temperature which shows the acetone molecule distinctly reduces transfer of energy barrier to complex 1 and hence, produces remarkable luminescent quenching. Also, the weak intermolecular hydrogen–bonding interactions thanks to the presence of various hydrogen bonding donors and acceptors, exist between ligand molecules, which were broken during fluorescence, resulting in quenching. The stoichiometry ratio and association constant were evaluated using Benesi–Hildebrand relation giving 1:1 stoichiometry between complex 1 and acetone. Additionally, DFT results can also explicate the significant response on complex 1 upon addition of acetone. This work is vital in a new loom for the detection of acetone and other ketones.

scholarly journals Synthesis and Crystal Structure of a Sandwich-type Transition Metal Complex with Tungstobismutate and Triethanolamine

2009 ◽  
Vol 64 (7) ◽  
pp. 821-825 ◽  
Author(s):  
Xiuhong Xu ◽  
Ling Zhang ◽  
Yi Zhang ◽  
Bin Qi ◽  
Fang Luo
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Transition Metal Complex ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Type Complex ◽  
Sandwich Type

The sandwich-type complex Na(H2O)6(C6H16O3N)2[Na2(H2O)7(C6H16O3N)]2[(Na(H2O)2)3- (Cu(H2O))3(BiW9O33)2]・14H2O (1) (C6H16O3N+ = protonated triethanolamine) has been synthesized and structurally characterized by single-crystal X-ray diffraction, IR spectroscopy and TG analysis. The basic framework of 1 is built from a sandwich-type [(Na(H2O)2)3- (Cu(H2O))3(BiW9O33)2]9− anion, two [Na2(H2O)7(C6H16O3N)]3+ cations, a free Na(H2O)6+ cation, and two free C6H16O3N+ units. In compound 1, the [(Na(H2O)2)3(Cu(H2O))3- (BiW9O33)2]9− anion links two bi-nuclear units [Na2(H2O)7(C6H16O3N)]3+ to form a [Na2- (H2O)7(C6H16O3N)]2[(Na(H2O)2)3(Cu(H2O))3(BiW9O33)2]3− cluster, and a new 3D supramolecular structure is further constructed by hydrogen bonding interactions among this cluster, the free Na(H2O)6+ cation, and the free C6H16O3N+ cations. Crystal data: Cu3Na8Bi2W18C24H150O121N4, monoclinic, C2/c, a = 14.5668(13), b = 23.0405(13), c = 37.412(2) Å , β = 91.569(10)° , Z = 4.

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 Circular linkage of intramolecular multi-hydrogen bonding frameworks through nucleophilic substitutions of β-dicarbonyls onto cyanuric chloride and subsequent tautomerisation

RSC Advances ◽  
2020 ◽  
Vol 10 (64) ◽  
pp. 39033-39036
Author(s):  
Ayano Awatani ◽  
Masaaki Suzuki
Keyword(s):  
Hydrogen Bonding ◽  
Cyanuric Chloride ◽  
Nucleophilic Substitutions ◽  
Hydrogen Bonding Interactions ◽  
Triazine Derivatives

Triply β-dicarbonyl-embedded 1,3,5-triazine derivatives result in formation of circular linkage of resonance-assisted hydrogen bonding interactions, which can be regarded as well-delocalized resonance hybrids.

Selective Hydrogen Bonding Controls Temperature Response of Layer-by-Layer Upper Critical Solution Temperature Micellar Assemblies

Soft Matter ◽  
2021 ◽  
Author(s):  
Aliaksei Aliakseyeu ◽  
Victoria Albright ◽  
Danielle Yarbrough ◽  
Samantha Hernandez ◽  
Qing Zhou ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Methacrylic Acid ◽  
Temperature Response ◽  
Solution Temperature ◽  
Layer By Layer ◽  
Critical Solution Temperature ◽  
Hydrogen Bonding Interactions ◽  
Upper Critical Solution Temperature ◽  
Lbl Films

This work establishes a correlation between the selectivity of hydrogen-bonding interactions and the functionality of micelle-containing layer-by-layer (LbL) assemblies. Specifically, we explore LbL films formed by assembly of poly(methacrylic acid)...

scholarly journals Boosting Performance of Self-Polarized Fully Printed Piezoelectric Nanogenerators via Modulated Strength of Hydrogen Bonding Interactions

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1908
Author(s):  
Hai Li ◽  
Sooman Lim
Keyword(s):  
Hydrogen Bonding ◽  
Composite Film ◽  
High Performance ◽  
Composite Films ◽  
Β Phase ◽  
Hydrogen Bonding Interactions ◽  
Barium Titanate Nanoparticles ◽  
Surface Modified ◽  
Piezoelectric Devices ◽  
Piezoelectric Nanogenerators

Self-polarized piezoelectric devices have attracted significant interest owing to their fabrication processes with low energy consumption. Herein, novel poling-free piezoelectric nanogenerators (PENGs) based on self-polarized polyvinylidene difluoride (PVDF) induced by the incorporation of different surface-modified barium titanate nanoparticles (BTO NPs) were prepared via a fully printing process. To reveal the effect of intermolecular interactions between PVDF and NP surface groups, BTO NPs were modified with hydrophilic polydopamine (PDA) and hydrophobic 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES) to yield PDA-BTO and PFD-BTO, respectively. This study demonstrates that the stronger hydrogen bonding interactions existed in PFD-BTO/PVDF composite film comparative to the PDA-BTO/PVDF composite film induced the higher β-phase formation (90%), which was evidenced by the XRD, FTIR and DSC results, as well as led to a better dispersion of NPs and improved mechanical properties of composite films. Consequently, PFD-BTO/PVDF-based PENGs without electric poling exhibited a significantly improved output voltage of 5.9 V and power density of 102 μW cm−3, which was 1.8 and 2.9 times higher than that of PDA-BTO/PVDF-based PENGs, respectively. This study provides a promising approach for advancing the search for high-performance, self-polarized PENGs in next-generation electric and electronic industries.

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