scholarly journals Recent Advances on Supramolecular Gels: From Stimuli-Responsive Gels to Co-Assembled and Self-Sorted Systems

2021 ◽  
Vol 03 (01) ◽  
pp. 025-040
Author(s):  
Chih-Wei Chu ◽  
Christoph A. Schalley
Keyword(s):  
Self Assembly ◽  
Dynamic Properties ◽  
Soft Materials ◽  
The Self ◽  
Low Molecular Weight ◽  
Multicomponent Systems ◽  
Stimuli Responsive ◽  
Recent Advances ◽  
Supramolecular Gels ◽  
Low Molecular Weight Gelators

Gels prepared from low-molecular-weight gelators (LMWGs) represent versatile soft materials. Self-assembly of LMWGs forms nanofibers and above critical gelation concentrations, the entanglement of which leads to self-supporting gels. Owing to the dynamic properties of the self-assembly process, stimuli-responsive LMWGs have prospered in the last decade. In addition, incorporating multiple LMWGs into one system brings the opportunity to achieve sophisticated designs and functions. This review covers recent advances in the field of supramolecular gels, from stimuli-responsive gelators to multicomponent systems that are self-sorting and/or co-assembling.

scholarly journals Synthesis and Self-Assembly Properties of Bola-Amphiphilic Glycosylated Lipopeptide-Type Supramolecular Hydrogels Showing Colour Changes Along with Gel–Sol Transition

2021 ◽  
Vol 22 (4) ◽  
pp. 1860
Author(s):  
Naoki Tsutsumi ◽  
Akitaka Ito ◽  
Azumi Ishigamori ◽  
Masato Ikeda ◽  
Masayuki Izumi ◽  
...  
Keyword(s):  
Self Assembly ◽  
Soft Materials ◽  
The Self ◽  
Low Molecular Weight ◽  
Stimuli Responsive ◽  
Short Peptide ◽  
Peptide Moiety ◽  
Colour Changes ◽  
Reversible Thermochromism ◽  
Significant Attention

Supramolecular hydrogels formed by self-assembly of low-molecular-weight amphiphiles (hydrogelators) have attracted significant attention, as smart and soft materials. However, most of the observed stimuli-responsive behaviour of these supramolecular hydrogels are limited to gel–sol transitions. In this study, we present bola-amphiphilic glycosylated lipopeptide-type supramolecular hydrogelators that exhibit reversible thermochromism along with a gel–sol transition. The bola-amphiphiles have mono-, di-, tri- or tetra-phenylalanine (F) as a short peptide moiety. We investigate and discuss the effects of the number of F residues on the gelation ability and the morphology of the self-assembled nanostructures.

scholarly journals Chirality, Gelation Ability and Crystal Structure: Together or Apart? Alkyl Phenyl Ethers of Glycerol as Simple LMWGs

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 732
Author(s):  
Alexander A. Bredikhin ◽  
Aidar T. Gubaidullin ◽  
Zemfira A. Bredikhina ◽  
Robert R. Fayzullin ◽  
Olga A. Lodochnikova
Keyword(s):  
Self Assembly ◽  
Chiral Recognition ◽  
Soft Materials ◽  
Gelling Agent ◽  
Low Molecular Weight ◽  
X Ray Diffraction ◽  
X Ray ◽  
Different Types ◽  
Low Molecular Weight Gelators ◽  
Phenyl Ethers

Chiral recognition plays an important role in the self-assembly of soft materials, in particular supramolecular organogels formed by low molecular weight gelators (LMWGs). Out of 14 pairs of the studied racemic and enantiopure samples of alkyl-substituted phenyl ethers of glycerol, only eight enantiopure diols form the stable gels in nonane. The formation of gels from solutions was studied by polarimetry, and their degradation with the formation of xerogels was studied by the PXRD method. The revealed crystalline characteristics of all studied xerogels corresponded to those for crystalline samples of the parent gelators. In addition to those previously investigated, crystalline samples of enantiopure para-n-alkylphenyl glycerol ethers [alkyl = pentyl (5), hexyl (6), heptyl (7), octyl (8), nonyl (9)] and racemic 3-(3,5-dimethylphenoxy)propane-1,2-diol (rac-14) have been examined by single crystal X-ray diffraction analysis. Among 22 samples of compounds 1-14 studied by SC-XRD, seven different types of supramolecular motifs are identified, of which only two are realized in crystals of supramolecular gelators. An attempt was made to relate the ability to gel formation with the characteristics of the supramolecular motif of a potential gelling agent, and the frequency of formation of the motif, required for gelation, with the chiral characteristics of the sample.

Nanoscale metallogel via self-assembly of self-assembled trinuclear coordination rings: multi-stimuli-responsive soft materials

2015 ◽  
Vol 44 (34) ◽  
pp. 15181-15188 ◽  
Author(s):  
Sudhakar Ganta ◽  
Dillip Kumar Chand
Keyword(s):  
Self Assembly ◽  
Soft Materials ◽  
The Self ◽  
Stimuli Responsive ◽  
Self Assembled

A multi-stimuli-responsive metallogel is obtained by the self-assembly of an already self-assembled trinuclear palladium(ii) based coordination ring of the rare M3L6 composition.

scholarly journals Synthesis and self-assembly of 1-deoxyglucose derivatives as low molecular weight organogelators

2011 ◽  
Vol 7 ◽  
pp. 234-242 ◽  
Author(s):  
Guijun Wang ◽  
Hao Yang ◽  
Sherwin Cheuk ◽  
Sherman Coleman
Keyword(s):  
Molecular Weight ◽  
Self Assembly ◽  
Aqueous Ethanol ◽  
Soft Materials ◽  
Low Molecular Weight ◽  
Aqueous Mixtures ◽  
Acyl Chains ◽  
Low Molecular Weight Gelators ◽  
Low Molecular Weight Organogelators

Low molecular weight gelators are an important class of molecules. The supramolecular gels formed by carbohydrate derived low molecular weight gelators are interesting soft materials that show great potential for many applications. Previously, we have synthesized a series of methyl 4,6-O-benzylidene-α-D-glucopyranoside derivatives and found that several of them are good gelators for water, aqueous mixtures of DMSO, or aqueous mixtures of ethanol. The gelation efficiency of these glycolipid derivatives is dependent upon the structures of their acyl chains. In order to understand the influence of the anomeric position of the sugar headgroup towards self-assembly, we synthesized a series of 1-deoxyglucose analogs, and examined their gelation properties in several solvents. Several long chain esters, including diacetylene containing esters, and aryl esters exhibited gelation in ethanol, aqueous ethanol, or aqueous DMSO. The synthesis and characterization of these novel analogs are reported.

scholarly journals Using molecular rotors to probe gelation

Soft Matter ◽  
2015 ◽  
Vol 11 (18) ◽  
pp. 3706-3713 ◽  
Author(s):  
Jaclyn Raeburn ◽  
Lin Chen ◽  
Salmah Awhida ◽  
Robert C. Deller ◽  
Manu Vatish ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Self Assembly ◽  
The Self ◽  
Molecular Rotors ◽  
Low Molecular Weight ◽  
Low Molecular Weight Gelators

Molecular rotors can be used to follow the self-assembly of low molecular weight gelators.

scholarly journals Computational Tools to Rationalize and Predict the Self-Assembly Behavior of Supramolecular Gels

Gels ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 87
Author(s):  
Ruben Van Lommel ◽  
Wim M. De Borggraeve ◽  
Frank De Proft ◽  
Mercedes Alonso
Keyword(s):  
Self Assembly ◽  
Soft Materials ◽  
The Self ◽  
Computational Techniques ◽  
Computational Tools ◽  
The Past ◽  
Fundamental Understanding ◽  
Supramolecular Gels ◽  
Future Challenges ◽  
Assembly Behavior

Supramolecular gels form a class of soft materials that has been heavily explored by the chemical community in the past 20 years. While a multitude of experimental techniques has demonstrated its usefulness when characterizing these materials, the potential value of computational techniques has received much less attention. This review aims to provide a complete overview of studies that employ computational tools to obtain a better fundamental understanding of the self-assembly behavior of supramolecular gels or to accelerate their development by means of prediction. As such, we hope to stimulate researchers to consider using computational tools when investigating these intriguing materials. In the concluding remarks, we address future challenges faced by the field and formulate our vision on how computational methods could help overcoming them.

scholarly journals Facile construction of a family of supramolecular gels with good levofloxacin hydrochloride loading capacity

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12641-12648
Author(s):  
Renyuan Chen ◽  
Caidie Xu ◽  
Yihao Lei ◽  
Hongxin Liu ◽  
Yabin Zhu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Alkyl Chain ◽  
Low Molecular Weight ◽  
Loading Capacity ◽  
Supramolecular Gels ◽  
Low Molecular Weight Gelators ◽  
Chain Lengths

A family of low molecular weight gelators with different alkyl chain lengths was constructed, having excellent gelation ability and antibiotic loading capacity. A low molecular weight hydrogelator was obtained by adjusting the length of alkyl chain.

scholarly journals Ferro-self-assembly: magnetic and electrochemical adaptation of a multiresponsive zwitterionic metalloamphiphile showing a shape-hysteresis effect

2021 ◽  
Vol 12 (1) ◽  
pp. 270-281
Author(s):  
Stefan Bitter ◽  
Moritz Schlötter ◽  
Markus Schilling ◽  
Marina Krumova ◽  
Sebastian Polarz ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Real Time ◽  
Self Assembly ◽  
Hysteresis Effect ◽  
The Self ◽  
Self Organization ◽  
Stimuli Responsive ◽  
Optical Birefringence

The self-organization properties of a stimuli responsive amphiphile can be altered by subjecting the paramagnetic oxidized form to a magnetic field of 0.8 T and monitored in real time by coupling optical birefringence with dynamic light scattering.

Sign in / Sign up

Export Citation Format

Share Document