Functional Self-Assembly of Hydrogen-Bonded Networks. Construction of Aromatic Stacks and Columns and Cavity-Size Control via Flexible Intercalation of 1D Chains Having Orthogonal Aromatic Substituents

1997 ◽  
Vol 119 (3) ◽  
pp. 499-505 ◽  
Author(s):  
Ken Endo ◽  
Takayoshi Ezuhara ◽  
Masayuki Koyanagi ◽  
Hideki Masuda ◽  
Yasuhiro Aoyama
Keyword(s):  
Self Assembly ◽  
Size Control ◽  
Cavity Size ◽  
1D Chains ◽  
Hydrogen Bonded

Preparation of BSA Nanoparticles by Desolvation Technique Using Acetone as Desolvating Agent

2012 ◽  
Vol 5 (1) ◽  
pp. 1643-1647
Author(s):  
Krishna Sailaja A ◽  
Amareshwar P
Keyword(s):  
Aqueous Solution ◽  
Standard Deviation ◽  
Process Parameters ◽  
Self Assembly ◽  
Size Control ◽  
Polymeric Materials ◽  
Preparation Condition ◽  
Assembly Process ◽  
Average Size

In order to see the functionality and toxicity of nanoparticles in various food and drug applications, it is important to establish procedures to prepare nanoparticles of a controlled size. Desolvation is a thermodynamically driven self-assembly process for polymeric materials. In this study, we prepared BSA nanoparticles using the desolvation technique using acetone as desolvating agent. Acetone was added intermittently into 1% BSA solution at different pH under stirring at 700 rpm. Amount of acetone added, intermittent timeline of acetone addition, and pH of solution were considered as process parameters to be optimized. The effect of the process parameters on size of the nanoparticles was studied. The results indicated that the size control of BSA nanoparticles was achieved by adding acetone intermittently. The standard deviation of average size of BSA nanoparticles at each preparation condition was minimized by adding acetone intermittently. The intermittent addition in polymeric aqueous solution can be useful for size control for food or drug applications.  

scholarly journals Synthesis of microporous hydrogen-bonded supramolecular organic frameworks through guanosine self-assembly

2021 ◽  
pp. 100519
Author(s):  
Ying He ◽  
Yanbin Zhang ◽  
Mengjia Liu ◽  
Kai Zhao ◽  
Chuan Shan ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hydrogen Bonded

scholarly journals Taming nitroformate through encapsulation with nitrogen-rich hydrogen-bonded organic frameworks

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jichuan Zhang ◽  
Yongan Feng ◽  
Richard J. Staples ◽  
Jiaheng Zhang ◽  
Jean’ne M. Shreeve
Keyword(s):  
Thermal Stability ◽  
Hydrogen Bonds ◽  
Self Assembly ◽  
Energetic Materials ◽  
Decomposition Temperature ◽  
High Oxygen Content ◽  
The Poor ◽  
Simple Preparation ◽  
First Time ◽  
Hydrogen Bonded

AbstractOwing to its simple preparation and high oxygen content, nitroformate [−C(NO2)3, NF] is an extremely attractive oxidant component for propellants and explosives. However, the poor thermostability of NF-based derivatives has been an unconquerable barrier for more than 150 years, thus hindering its application. In this study, the first example of a nitrogen-rich hydrogen-bonded organic framework (HOF-NF) is designed and constructed through self-assembly in energetic materials, in which NF anions are trapped in pores of the resulting framework via the dual force of ionic and hydrogen bonds from the strengthened framework. These factors lead to the decomposition temperature of the resulting HOF-NF moiety being 200 °C, which exceeds the challenge of thermal stability over 180 °C for the first time among NF-based compounds. A large number of NF-based compounds with high stabilities and excellent properties can be designed and synthesized on the basis of this work.

Chemical and Constitutional Influences in the Self-Assembly of Functional Supramolecular Hydrogen-Bonded Nanoscopic Fibres

2006 ◽  
Vol 12 (36) ◽  
pp. 9161-9175 ◽  
Author(s):  
Josep Puigmartí-Luis ◽  
Andrea Minoia ◽  
Ángel Pérez del Pino ◽  
Gregori Ujaque ◽  
Concepció Rovira ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Hydrogen Bonded

Self-Assembly Growth and Size Control of Silver Nanocrystals for Nonvolatile Memory Applications

2009 ◽  
Vol 610-613 ◽  
pp. 585-590 ◽  
Author(s):  
Li Wang ◽  
Hong Fang Sun ◽  
Hui Hua Zhou ◽  
Jing Zhu
Keyword(s):  
Self Assembly ◽  
Nonvolatile Memory ◽  
Single Layer ◽  
Size Control ◽  
Transmission Electron ◽  
Sputtering Power ◽  
High Uniformity ◽  
Memory Applications ◽  
Magnetic Sputtering ◽  
The Relationship

A film with a single-layer of size controlled silver nanocrystals embedded in silicon dioxide (SiO2) dielectric film by magnetic sputtering has been fabricated for nonvolatile memory applications. The effects of sputtering power, deposition time and substrate temperature on Ag nanocrystals formation were investigated. Transmission electron microscopy (TEM) images showed the as-prepared Ag nanocrystals had high uniformity in their size and distribution. The relationship between Ag nanocrystal size, density and electron storage capability as well as date retention time has been discussed.

Surface self-assembly of the cyanuric acid–melamine hydrogen bonded network

2006 ◽  
pp. 538-540 ◽  
Author(s):  
Luís M. A. Perdigão ◽  
Neil R. Champness ◽  
Peter H. Beton
Keyword(s):  
Self Assembly ◽  
Cyanuric Acid ◽  
Hydrogen Bonded

Hydrogen-bonded azaphenacene: a strategy for the organization of π-conjugated materials

2018 ◽  
Vol 6 (15) ◽  
pp. 3968-3975 ◽  
Author(s):  
Paula Gómez ◽  
Stamatis Georgakopoulos ◽  
José Pedro Cerón ◽  
Iván da Silva ◽  
Miriam Más-Montoya ◽  
...  
Keyword(s):  
Self Assembly ◽  
Molecular Design ◽  
The Self ◽  
Molecular Materials ◽  
Conjugated Materials ◽  
Hydrogen Bonded

Molecular design for the self-assembly of molecular materials.

scholarly journals Dual self-assembly of supramolecular peptide nanotubes to provide stabilisation in water

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Julia Y. Rho ◽  
Henry Cox ◽  
Edward D. H. Mansfield ◽  
Sean H. Ellacott ◽  
Raoul Peltier ◽  
...  
Keyword(s):  
Self Assembly ◽  
Supramolecular Assembly ◽  
Ordered Structures ◽  
Peptide Bonds ◽  
Self Assembling ◽  
Peptide Hydrogen ◽  
Aqueous Conditions ◽  
Β Sheet ◽  
Peptide Core ◽  
Hydrogen Bonded

Abstract Self-assembling peptides have the ability to spontaneously aggregate into large ordered structures. The reversibility of the peptide hydrogen bonded supramolecular assembly make them tunable to a host of different applications, although it leaves them highly dynamic and prone to disassembly at the low concentration needed for biological applications. Here we demonstrate that a secondary hydrophobic interaction, near the peptide core, can stabilise the highly dynamic peptide bonds, without losing the vital solubility of the systems in aqueous conditions. This hierarchical self-assembly process can be used to stabilise a range of different β-sheet hydrogen bonded architectures.

Chiral hydrogen-bonded supramolecular capsules: synthesis, characterization and complexation of C70

2019 ◽  
Vol 55 (22) ◽  
pp. 3298-3301 ◽  
Author(s):  
Martha Kohlhaas ◽  
Manfred Zähres ◽  
Christian Mayer ◽  
Marianne Engeser ◽  
Christian Merten ◽  
...  
Keyword(s):  
Self Assembly ◽  
Phosphoric Acids ◽  
Hydrogen Bonded

Hydrogen-bonded nanocapsules were generated by multi-component self-assembly of phosphoric acids and amidines and could be used as hosts for C70.

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