Amide–triazole isosteric substitution for tuning self-assembly and incorporating new functions into soft supramolecular materials

2015 ◽  
Vol 51 (25) ◽  
pp. 5294-5297 ◽  
Author(s):  
Jürgen Bachl ◽  
Judith Mayr ◽  
Francisco J. Sayago ◽  
Carlos Cativiela ◽  
David Díaz Díaz
Keyword(s):  
Self Assembly ◽  
Proof Of Concept ◽  
Supramolecular Materials

We report the proof-of-concept demonstration for the synthesis of novel supramolecular soft gel materials based on amide–triazole isometric substitution.

Stochastic Computing via In Operando Modulation of Rectification in Molecular Tunneling Junctions

2020 ◽  
Author(s):  
Xinkai Qiu ◽  
Sylvia Rousseva ◽  
Gang Ye ◽  
Jan C. Hummelen ◽  
Ryan Chiechi
Keyword(s):  
Self Assembly ◽  
Variable Temperature ◽  
Self Assembled Monolayers ◽  
Microfluidic Channels ◽  
Proof Of Concept ◽  
Glycol Ethers ◽  
Stochastic Computing ◽  
Assembled Monolayers ◽  
In Operando ◽  
Tunneling Junctions

This paper describes the reconfiguration of molecular tunneling junctions during operation via the self-assembly of bilayers of glycol ethers. We use well-established functional groups to modulate the magnitude and direction of rectification in assembled tunneling junctions by exposing them to solutions containing different glycol ethers. Variable-temperature measurements establish that rectification occurs by a bias-dependent tunneling-hopping mechanism and that glycol ethers, beside being an unusually efficient tunneling medium, behave identically to alkanes. We fabricated memory bits from crossbar junctions prepared by injecting eutectic Ga-In into microfluidic channels. Two 8-bit registers were able to perform logical AND operations on bit strings encoded into chemical packets as microfluidic droplets that alter the composition of the crossbar junctions through self-assembly to effect memristor-like properties. This proof of concept work demonstrates the potential for fieldable molecular-electronic devices based on tunneling junctions of self-assembled monolayers and bilayers.

scholarly journals Self-assembly induced luminescence of Eu3+-complexes and application in bioimaging

2021 ◽  
Author(s):  
Ping-Ru Su ◽  
Tao Wang ◽  
Pan-Pan Zhou ◽  
Xiao-Xi Yang ◽  
Xiao-Xia Feng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Rare Earth ◽  
Luminescence Intensity ◽  
Self Assembly ◽  
Room Temperature ◽  
Molecular Motion ◽  
Proof Of Concept ◽  
Room Temperature Phosphorescence ◽  
New Strategy ◽  
Size Controlled

Abstract Design and engineering of highly efficient emitting materials with assembly-induced luminescence, such as room temperature phosphorescence (RTP) and aggregation-induced emission (AIE), have stimulated extensive efforts. Here, we propose a new strategy to obtain size-controlled Eu3+-complex nanoparticles (Eu-NPs) with self-assembly induced luminescence (SAIL) characteristics without encapsulation or hybridization. Compared with previous RTP or AIE materials, the SAIL phenomena of increased luminescence intensity and lifetime in aqueous solution for the proposed Eu-NPs are due to the combined effect of self-assembly in confining the molecular motion and shielding the water quenching. As a proof of concept, we also show that this system can be further applied in bioimaging, temperature measurement and HClO sensing. The SAIL activity of the rare-earth (RE) system proposed here offers a further step forward on the roadmap for the development of RE light conversion systems and their integration in bioimaging and therapy applications.

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 Supramolecular assemblies of organo-functionalised hybrid polyoxometalates: from functional building blocks to hierarchical nanomaterials

2022 ◽  
Author(s):  
Jamie M. Cameron ◽  
Geoffroy Guillemot ◽  
Theodor Galambos ◽  
Sharad S. Amin ◽  
Elizabeth Hampson ◽  
...  
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Supramolecular Assemblies ◽  
The Self ◽  
Supramolecular Materials ◽  
Inorganic Hybrid ◽  
Hierarchical Nanomaterials

Organic–inorganic hybrid polyoxometalates are versatile building blocks for the self-assembly of functional supramolecular materials.

Fabrication of pH- and temperature-directed supramolecular materials from 1D fibers to exclusively 2D planar structures using an ionic self-assembly approach

2015 ◽  
Vol 3 (14) ◽  
pp. 3273-3279 ◽  
Author(s):  
Yanjun Gong ◽  
Qiongzheng Hu ◽  
Ni Cheng ◽  
Tao Wang ◽  
Wenwen Xu ◽  
...  
Keyword(s):  
Smart Materials ◽  
Self Assembly ◽  
Materials Science ◽  
Multiple Response ◽  
Supramolecular Materials ◽  
Planar Structures

Constructing multiple-response smart materials is a very interesting and challenging task in materials science.

scholarly journals Chemically Fueled Block Copolymer Self-Assembly into Transient Nanoreactors

2021 ◽  
Author(s):  
Michaela A. Würbser ◽  
Patrick Schwarz ◽  
Jonas Heckel ◽  
Alexander M. Bergmann ◽  
Andreas Walther ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Small Molecules ◽  
Chemical Reaction ◽  
Self Assembly ◽  
The Self ◽  
Supramolecular Materials ◽  
Reaction Cycle ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles ◽  
Large Work

In chemically fueled supramolecular materials, molecular self-assembly is coupled to a fuel-driven chemical reaction cycle. The fuel-dependence makes the material dynamic and endows it with exciting properties like adaptivity and autonomy. In contrast to the large work on the self-assembly of small molecules, we herein designed a diblock copolymer, which self assembles into transient micelles when coupled to a fuel-driven chemical reaction cycle. Moreover, we used these transient block copolymer micelles to locally increase the concentration of hydrophobic reagents and thereby function as a transient nanoreactor.

scholarly journals Regulation of the Switchable Luminescence of Tridentate Platinum(II) Complexes by Photoisomerization

2021 ◽  
Vol 8 ◽  
Author(s):  
Yongguang Li ◽  
Yuexuan Fei ◽  
Hongcheng Sun ◽  
Shuangjiang Yu ◽  
Junqiu Liu
Keyword(s):  
Self Assembly ◽  
Luminescent Properties ◽  
Vital Role ◽  
Dual Emission ◽  
Supramolecular Materials ◽  
Metal Interactions ◽  
Ligand Charge Transfer ◽  
Metal Metal ◽  
Flat Structures ◽  
External Stimuli

Organoplatinum (II) complexes are promising candidates for the construction of smart supramolecular materials due to their unique flat structures. This accompanied by intriguing luminescent properties, prompts the molecules to aggregate after external stimuli. Nevertheless, the utilization of photo-responsive subunits to modulate their assemble behaviors and functions are still rarely explored. In this work, azobenzene (azo)-appended tridentate platinum (II) complexes with different linkers have been designed and synthesized. The intermolecular hydrogen bonding, π-π stacking, and metal-metal interactions were finely controlled through the tiny alteration of the linkers, which was found to play a vital role in self-assembly, and photophysical and photoisomerization properties. Some of them exhibited dual emission bands originating from metal-perturbed triplet intraligand (3IL) and metal-metal to ligand charge transfer (3MMLCT) excited states due to the different intermolecular interactions. Based on this, the manipulation of switchable luminescence as well as the controllable morphologies have been realized by photoisomerization.

Self-assembled blue-light emitting materials for their liquid crystalline and OLED applications: from a simple molecular design to supramolecular materials

2020 ◽  
Vol 5 (10) ◽  
pp. 1691-1705
Author(s):  
Vinay S. Sharma ◽  
Anuj S. Sharma ◽  
Nikhil K. Agarwal ◽  
Priyanka A. Shah ◽  
Pranav S. Shrivastav
Keyword(s):  
Liquid Crystals ◽  
Blue Light ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Molecular Design ◽  
Supramolecular Materials ◽  
Light Emitting ◽  
New Family ◽  
Self Assembled

A new family of blue-light-emitting supramolecular bowl-shaped columnar hexagonal liquid crystals based on p-tert-butylcalix[4]arene and functionalized via chalconyl–ester-linked biphenyl amine derivatives form a self-assembly and their applications.

scholarly journals Asymmetric bifunctional protein nanoparticles through redesign of self-assembly

2019 ◽  
Vol 1 (5) ◽  
pp. 1833-1846 ◽  
Author(s):  
Santiago Sosa ◽  
Andrés H. Rossi ◽  
Alan M. Szalai ◽  
Sebastián Klinke ◽  
Jimena Rinaldi ◽  
...  
Keyword(s):  
Self Assembly ◽  
Eukaryotic Cells ◽  
Proof Of Concept ◽  
Bifunctional Protein ◽  
Protein Scaffold ◽  
Protein Nanoparticles ◽  
Novel Scaffold

In this work we rationally redesign and engineer a decameric protein scaffold to generate an asymmetric Janus-like protein nanoparticle. As a proof of concept this novel scaffold is functionalized (i) to fluorescently label eukaryotic cells and (ii) to generate a multichromophoric FRET nanoparticle.

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