Inclusion of a Cu2+Ion by a Large-Cavity Crown Ether Dibenzo-24-Crown-8 through Supramolecular Interactions†

2005 ◽  
Vol 44 (21) ◽  
pp. 7313-7315 ◽  
Author(s):  
Vaddypally Shivaiah ◽  
Samar K. Das
Keyword(s):  
Crown Ether ◽  
Large Cavity ◽  
Supramolecular Interactions

Synthesis, Crystal Structure and Electrochemical Properties of a New Adduct of Benzo-15-crown-5 and H3PMo12O40

2009 ◽  
Vol 64 (3) ◽  
pp. 274-280 ◽  
Author(s):  
Qinghua Du ◽  
Dawei Song ◽  
Wansheng You ◽  
Yi Zhao ◽  
Tingting Gan ◽  
...  
Keyword(s):  
Crown Ether ◽  
Supramolecular Interactions ◽  
Modified Carbon Paste Electrode ◽  
Cyclic Voltammograms ◽  
Molecular Formula ◽  
Carbon Paste ◽  
Acidic Aqueous Solution ◽  
Oxonium Ions ◽  
Paste Electrode ◽  
Oxygen Atoms

A new crown ether-POM (POM = polyoxometalate) adduct with the molecular formula [(C14- H20O5)4(H3O)3]PMo12O40 ・ 0.5CH3CN (1) was isolated from the mixed solvent of acetonitrile and methanol. The adduct is constructed from Keggin [PMo12O40]3− anions and [(C14H20O5)- (H3O+)] and [(C14H20O5)2(H3O+)] cations via electrostatic and hydrogen bonding interactions. The supramolecular interactions combine the crown ether with oxonium ions. In the [(C14H20O5)- (H3O+)] moieties, the oxonium ions reside out of the planes defined by the oxygen atoms of the crown ether. The [(C14H20O5)2(H3O+)] moieties exhibit a sandwich structure. There exist hydrogen bonds between the oxonium ions of the [(C14H20O5)(H3O)]+ cations and the acetonitrile molecules and the terminal and bridging oxygen atoms of the [PMo12O40]3− anions. The adduct has been used as a bulk-modifier to fabricate a chemically modified carbon paste electrode (MCPE), which displays well-defined cyclic voltammograms with three reversible two-electron redox couples in acidic aqueous solution, and electrocatalytic activities towards the reduction of H2O2 and NO2−.

Probing Supramolecular Interactions between a Crown Ether Appended Zinc Phthalocyanine and an Ammonium Group Appended to a C60 Derivative

2016 ◽  
Vol 22 (6) ◽  
pp. 2051-2059 ◽  
Author(s):  
Marcus Lederer ◽  
Uwe Hahn ◽  
Jean-Marc Strub ◽  
Sarah Cianférani ◽  
Alain Van Dorsselaer ◽  
...  
Keyword(s):  
Crown Ether ◽  
Zinc Phthalocyanine ◽  
Supramolecular Interactions ◽  
Ammonium Group

Preparation and Gas Sensitivity of Crown Ether Metal Complex Film Gas Sensor

2020 ◽  
Vol 2 (1) ◽  
pp. 1-12
Author(s):  
Gulgina Mamtimin ◽  
Halisa Arkin ◽  
Patima Nizamidin ◽  
Erkin Tursun ◽  
Abliz Yimit
Keyword(s):  
Crown Ether ◽  
Metal Complex ◽  
Gas Sensor ◽  
Gas Sensitivity ◽  
Complex Film

PEO-based electrolytes blended with star polymers with precisely imprinted polymeric pseudo-crown ether cavities for alkali metal ion batteries

2019 ◽  
Vol 576 ◽  
pp. 182-189 ◽  
Author(s):  
Zhuliu Xiao ◽  
Binghua Zhou ◽  
Jirong Wang ◽  
Cai Zuo ◽  
Dan He ◽  
...  
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Metal Ion ◽  
Star Polymers ◽  
Alkali Metal Ion

Electrochemiluminescence of Ruthenium(II) Complexes Functionalized with Crown Ether Pendants and Effects of Cation Binding

2008 ◽  
Vol 47 (3) ◽  
pp. 1218-1223 ◽  
Author(s):  
Mei-Jin Li ◽  
Zuofeng Chen ◽  
Nianyong Zhu ◽  
Vivian Wing-Wah Yam ◽  
Yanbing Zu
Keyword(s):  
Crown Ether ◽  
Cation Binding

scholarly journals Ultra-strong bio-glue from genetically engineered polypeptides

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chao Ma ◽  
Jing Sun ◽  
Bo Li ◽  
Yang Feng ◽  
Yao Sun ◽  
...  
Keyword(s):  
Soft Tissues ◽  
Covalent Bond ◽  
Genetically Engineered ◽  
Supramolecular Interactions ◽  
Molar Ratio ◽  
High Adhesion ◽  
Strong Adhesion ◽  
Order Of Magnitude

AbstractThe development of biomedical glues is an important, yet challenging task as seemingly mutually exclusive properties need to be combined in one material, i.e. strong adhesion and adaption to remodeling processes in healing tissue. Here, we report a biocompatible and biodegradable protein-based adhesive with high adhesion strengths. The maximum strength reaches 16.5 ± 2.2 MPa on hard substrates, which is comparable to that of commercial cyanoacrylate superglue and higher than other protein-based adhesives by at least one order of magnitude. Moreover, the strong adhesion on soft tissues qualifies the adhesive as biomedical glue outperforming some commercial products. Robust mechanical properties are realized without covalent bond formation during the adhesion process. A complex consisting of cationic supercharged polypeptides and anionic aromatic surfactants with lysine to surfactant molar ratio of 1:0.9 is driven by multiple supramolecular interactions enabling such strong adhesion. We demonstrate the glue’s robust performance in vitro and in vivo for cosmetic and hemostasis applications and accelerated wound healing by comparison to surgical wound closures.

Crown ethers in hydrogenated graphene

2021 ◽  
Author(s):  
Kai Guo ◽  
Sitong Liu ◽  
Haoming Tu ◽  
Zhikun Wang ◽  
Liang Chen ◽  
...  
Keyword(s):  
Crown Ether ◽  
Crown Ethers ◽  
Hydrogenated Graphene ◽  
High Flexibility

Crown ethers could serve as hosts to selectively incorporate various guest atoms or molecules within the macrocycles. However, the high flexibility of crown ether molecules limits their applications in areas...

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