Supramolecular Interactions On Mass Sensitive Sensors In Gas Phases And Liquids

2005 ◽  
Author(s):  
J. Hartmann ◽  
J. Auge ◽  
R. Lucklum ◽  
S. Rosler ◽  
P. Hauptmann ◽  
...  
Keyword(s):  
Supramolecular Interactions ◽  
Gas Phases ◽  
Mass Sensitive Sensors

Supramolecular interactions on mass sensitive sensors in gas phases and liquids

1996 ◽  
Vol 34 (1-3) ◽  
pp. 305-311 ◽  
Author(s):  
J. Hartmann ◽  
J. Auge ◽  
R. Lucklum ◽  
S. Rösler ◽  
P. Hauptmann ◽  
...  
Keyword(s):  
Supramolecular Interactions ◽  
Gas Phases ◽  
Mass Sensitive Sensors

Critical Raman line shape behavior of fluid nitrogen

2004 ◽  
Vol 76 (1) ◽  
pp. 147-155 ◽  
Author(s):  
M. Musso ◽  
F. Matthai ◽  
D. Keutel ◽  
K.-L. Oehme
Keyword(s):  
Raman Line ◽  
Line Shape ◽  
Line Broadening ◽  
Vibrational Resonance ◽  
Critical Isochore ◽  
Molecular Fluids ◽  
Detection Techniques ◽  
Gas Phases ◽  
Line Shapes ◽  
Band Position

Isotropic Raman line shapes of simple molecular fluids exhibit critical line broadening near their respective liquid-gas critical points. In order to observe this phenomenon, it is essential that the band position of a given vibrational mode is density-dependent, and that vibrational depopulation processes negligibly contribute to line broadening. Special attention was given to the fact that the isotropic (i.e., nonrotationally broadened) line shape of liquid N2 is affected by resonant intermolecular vibrational interactions between identical oscillators. By means of the well-chosen isotopic mixture (14N2).975 - (14N15N).025, the temperature and density dependences of shift, width, and asymmetry of the resonantly coupled 14N2 and, depending on the S/N ratio available, of the resonantly uncoupled 14N15N were determined, with up to milli-Kelvin resolution, in the coexisting liquid and gas phases and along the critical isochore, using a highest-resolution double monochromator and modern charge-coupled device detection techniques. Clear evidence was found that vibrational resonance couplings are present in all dense phases studied.

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.

Supramolecular interactions in the heteroarylimine-substituted calix[4]arenes: the formation of cyclic dodecanuclear palladium aggregates

2021 ◽  
pp. 1-14
Author(s):  
Lyudmila V. Tsymbal ◽  
Roman V. Rodik ◽  
Oksana Danylyuk ◽  
Kinga Suwinska ◽  
Janusz Lipkowski ◽  
...  
Keyword(s):  
Supramolecular Interactions

Supramolecular interactions in Cobalt(II)–nucleobases complexes: A methyl matter

2016 ◽  
Vol 452 ◽  
pp. 251-257 ◽  
Author(s):  
Khaled Hassanein ◽  
Félix Zamora ◽  
Oscar Castillo ◽  
Pilar Amo-Ochoa
Keyword(s):  
Supramolecular Interactions

scholarly journals Strategies for the Development of pH-Responsive Synthetic Polypeptides and Polymer-Peptide Hybrids: Recent Advancements

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 624
Author(s):  
Cintya Dharmayanti ◽  
Todd A. Gillam ◽  
Manuela Klingler-Hoffmann ◽  
Hugo Albrecht ◽  
Anton Blencowe
Keyword(s):  
Functional Groups ◽  
Hybrid Materials ◽  
Tumour Microenvironment ◽  
The Body ◽  
Supramolecular Interactions ◽  
Biological Interactions ◽  
Ph Responsive ◽  
Form Complex ◽  
Synthetic Polypeptides ◽  
External Stimuli

Synthetic polypeptides and polymer-peptide hybrid materials have been successfully implemented in an array of biomedical applications owing to their biocompatibility, biodegradability and ability to mimic natural proteins. In addition, these materials have the capacity to form complex supramolecular structures, facilitate specific biological interactions, and incorporate a diverse selection of functional groups that can be used as the basis for further synthetic modification. Like conventional synthetic polymers, polypeptide-based materials can be designed to respond to external stimuli (e.g., light and temperature) or changes in the environmental conditions (e.g., redox reactions and pH). In particular, pH-responsive polypeptide-based systems represent an interesting avenue for the preparation of novel drug delivery systems that can exploit physiological or pathological pH variations within the body, such as those that arise in the extracellular tumour microenvironment, intracellularly within endosomes/lysosomes, or during tissue inflammation. Here, we review the significant progress made in advancing pH-responsive polypeptides and polymer-peptide hybrid materials during the last five years, with a particular emphasis on the manipulation of ionisable functional groups, pH-labile linkages, pH-sensitive changes to secondary structure, and supramolecular interactions.

An insight into the supramolecular interactions in two linear polyvanadates

2021 ◽  
pp. 130681
Author(s):  
Snehasish Thakur ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Supramolecular Interactions ◽  
Insight Into

scholarly journals Revealing the chirality origin and homochirality crystallization of Ag14 nanocluster at the molecular level

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiao-Qian Liang ◽  
Ying-Zhou Li ◽  
Zhi Wang ◽  
Shan-Shan Zhang ◽  
Yi-Cheng Liu ◽  
...  
Keyword(s):  
Molecular Level ◽  
Spontaneous Resolution ◽  
Silver Nanoclusters ◽  
Supramolecular Interactions ◽  
Hydrogen Atoms ◽  
Special Effects ◽  
Π Stacking Interaction ◽  
Origin Of Chirality ◽  
Present Characteristic ◽  
Aromatic Hydrogen

AbstractAlthough chirality is an ever-present characteristic in biology and some artificial molecules, controlling the chirality and demystifying the chirality origin of complex assemblies remain challenging. Herein, we report two homochiral Ag14 nanoclusters with inherent chirality originated from identical rotation of six square faces on a Ag8 cube driven by intra-cluster π···π stacking interaction between pntp− (Hpntp = p-nitrothiophenol) ligands. The spontaneous resolution of the racemic (SD/rac-Ag14a) to homochiral nanoclusters (SD/L-Ag14 and SD/R-Ag14) can be realized by re-crystallizing SD/rac-Ag14a in acetonitrile, which promotes the homochiral crystallization in solid state by forming C–H···O/N hydrogen bonds with nitro oxygen atoms in pntp− or aromatic hydrogen atoms in dpph (dpph = 1,6-bis(diphenylphosphino)hexane) on Ag14 nanocluster. This work not only provides strategic guidance for the syntheses of chiral silver nanoclusters in an all-achiral environment, but also deciphers the origin of chirality at molecular level by identifying the special effects of intra- and inter-cluster supramolecular interactions.

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