Helical supramolecular organization of a 1,2-diol appended naphthalene diimide organogelator via an extended intermolecular H-bonding network

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30690-30694 ◽  
Author(s):  
Sopan Valiba Shinde ◽  
Mandar Kulkarni ◽  
Pinaki Talukdar
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Supramolecular Organization ◽  
Naphthalene Diimide ◽  
Hydrogen Bonded

Hydrogen bonded self-assembly of a 1,2-diol linked naphthalene diimide derivative features M-helical and J-type aggregation. In MCH/CHCl3, the compound exhibits intense yellow excimer and thermoreversible “sol–gel” behavior.

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.

Sol–gel synthesis of 2-dimensional TiO2: self-assembly of Ti–oxoalkoxy–acetate complexes by carboxylate ligand directed condensation

2021 ◽  
Author(s):  
Ruohong Sui ◽  
Connor E. Deering ◽  
Rohen Prinsloo ◽  
Christopher B. Lavery ◽  
Nancy Chou ◽  
...  
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Carboxylate Ligand ◽  
Sol Gel Synthesis ◽  
First Time

2-Dimensional TiO2 is synthesized for the first time by a sol–gel self-assembly of Ti–oxoalkoxy–acetate complexes.

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

New supramolecular organization for a glycoluril: chiral hydrogen-bonded ribbons

2002 ◽  
pp. 2228 ◽  
Author(s):  
Darren W. Johnson ◽  
Liam C. Palmer ◽  
Fraser Hof ◽  
Peter M. Iovine ◽  
Julius Rebek
Keyword(s):  
Supramolecular Organization ◽  
Hydrogen Bonded

scholarly journals Redox-sensitive reversible self-assembly of amino acid–naphthalene diimide conjugates

2017 ◽  
Vol 7 (6) ◽  
pp. 20160099 ◽  
Author(s):  
Wathsala Liyanage ◽  
Paul W. Rubeo ◽  
Bradley L. Nilsson
Keyword(s):  
Amino Acid ◽  
Self Assembly ◽  
Functional Materials ◽  
Supramolecular Materials ◽  
Responsive Materials ◽  
Naphthalene Diimide ◽  
Reducing Conditions ◽  
Aqueous Solvent ◽  
Stimulus Responsive ◽  
Fibril Aggregates

Peptide and low molecular weight amino acid-based materials that self-assemble in response to environmental triggers are highly desirable candidates in forming functional materials with tunable biophysical properties. In this paper, we explore redox-sensitive self-assembly of cationic phenylalanine derivatives conjugated to naphthalene diimide (NDI). Self-assembly of the cationic Phe-NDI conjugates into nanofibrils was induced in aqueous solvent at high ionic strength. Under reducing conditions, these self-assembled Phe-NDI conjugate fibrils underwent a morphological change to non-fibril aggregates. Upon reoxidation, the initially observed fibrils were reformed. The study herein provides an interesting strategy to effect reversible switching of the structure of supramolecular materials that can be applied to the development of sophisticated stimulus-responsive materials.

scholarly journals Modification of a Single Atom Affects the Physical Properties of Double Fluorinated Fmoc-Phe Derivatives

2021 ◽  
Vol 22 (17) ◽  
pp. 9634
Author(s):  
Moran Aviv ◽  
Dana Cohen-Gerassi ◽  
Asuka A. Orr ◽  
Rajkumar Misra ◽  
Zohar A. Arnon ◽  
...  
Keyword(s):  
Amino Acid ◽  
Physical Properties ◽  
Self Assembly ◽  
Deep Understanding ◽  
Building Blocks ◽  
The Self ◽  
Single Atom ◽  
Supramolecular Organization ◽  
Assembly Process ◽  
Wide Range

Supramolecular hydrogels formed by the self-assembly of amino-acid based gelators are receiving increasing attention from the fields of biomedicine and material science. Self-assembled systems exhibit well-ordered functional architectures and unique physicochemical properties. However, the control over the kinetics and mechanical properties of the end-products remains puzzling. A minimal alteration of the chemical environment could cause a significant impact. In this context, we report the effects of modifying the position of a single atom on the properties and kinetics of the self-assembly process. A combination of experimental and computational methods, used to investigate double-fluorinated Fmoc-Phe derivatives, Fmoc-3,4F-Phe and Fmoc-3,5F-Phe, reveals the unique effects of modifying the position of a single fluorine on the self-assembly process, and the physical properties of the product. The presence of significant physical and morphological differences between the two derivatives was verified by molecular-dynamics simulations. Analysis of the spontaneous phase-transition of both building blocks, as well as crystal X-ray diffraction to determine the molecular structure of Fmoc-3,4F-Phe, are in good agreement with known changes in the Phe fluorination pattern and highlight the effect of a single atom position on the self-assembly process. These findings prove that fluorination is an effective strategy to influence supramolecular organization on the nanoscale. Moreover, we believe that a deep understanding of the self-assembly process may provide fundamental insights that will facilitate the development of optimal amino-acid-based low-molecular-weight hydrogelators for a wide range of applications.

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
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