Article
Chemistry, Physical
Dorian Rabaud, Paul Dussart, Guylaine Ducouret, Pierre-Antoine Albouy, Jeremy Forte, Benjamin Isare, Laurent Bouteiller
Summary: This study explores the possibility of designing FDCA-based organogelators that self-assemble into fibrillar networks stabilized by hydrogen bonding. Gelation tests demonstrate the versatility of this gelator family with various gelled liquids, especially apolar ones. The structure of the gels was investigated using FTIR and CD spectroscopies, crystallography, powder X-ray diffraction, and rheology.
Article
Chemistry, Physical
Dorian Rabaud, Paul Dussart, Guylaine Ducouret, Pierre-Antoine Albouy, Jeremy Forte, Benjamin Isare, Laurent Bouteiller
Summary: This study explores the possibility of designing FDCA-based organogelators and investigates their gel structure. The results show that these gelators are versatile and can be used in a wide variety of applications, especially in non-polar liquids.
Article
Materials Science, Multidisciplinary
Jiwei Jiang, Rui Zhao, Taoping Wang, Bo Song, Yulian Chen, Hui Zhang, Bin Dong
Summary: Recently, advanced wearable electronic devices have demonstrated great potential in various applications. However, the fabrication of electronic materials with excellent adhesion and self-healing capability remains a challenge. In this study, we introduce an agar/graphene conductive organogel with strong adhesion and self-healing properties. The organogel can also be used as a wearable device to detect human motion and physiological activities. Overall, the adhesive, self-healable, and wearable agar/graphene conductive organogel holds promising potential in electronic wearable devices.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Polymer Science
Alexandra Croitoriu, Loredana E. Nita, Aurica P. Chiriac, Alina G. Rusu, Maria Bercea
Summary: This study aimed to obtain supramolecular gels through co-assembly phenomenon using FMOC-amino acids as low molecular weight gelators. The stability and molecular arrangement of the new structures were evaluated through various experiments, highlighting the interaction between compounds and the gel-like structure evidenced by viscoelastic parameters.
Article
Chemistry, Multidisciplinary
Sreejith Sudhakaran Jayabhavan, Jonathan W. Steed, Krishna K. Damodaran
Summary: A series of bis(urea) compounds with complementary functional groups similar to the drug metronidazole and its structural isomer have been synthesized and studied for their gelation properties. It was found that drug-mimetic gels interact with the surface of the drug crystal, resulting in new crystal morphologies, while nonmimetic gels did not show this effect.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
He Wei, Shuwei Lin, Wei Liu, Yi Li, Baozong Li, Yonggang Yang
Summary: The self-assembling behaviors of lipotripeptide stereoisomers based on alanine were studied, and it was found that they formed nanoflakes or nanoribbons through the hydrophobic association of alkyl chains and intermolecular hydrogen bonding. The stacking chirality of carbonyl groups was determined by the chirality of alanine residue at C-terminal. Furthermore, the stereochemical sequence of the peptide segment could subtly manipulate the intermolecular hydrogen bonding and molecular packing structures.
Article
Chemistry, Multidisciplinary
Huan Ruan, Qian Jiang, Yuan Qiu, Xiaolin Xie, Yuping Zhang, Yonggui Liao
Summary: Liquid crystalline physical gels (LCPGs) are of increasing interest due to their mechanical properties and stimulus-response behaviors. However, developing high-performance LCPGs remains challenging due to properties like thermal stability and gelation capability. In this study, four novel gelators with ethylene glycol groups were synthesized, and their improved compatibility with liquid crystals was observed. The prepared compounds formed stable LCPGs in P0616A, with one gelator showing a storage modulus higher than 106 Pa. These low molecular weight gelators provide a strategy for constructing high-performance cholesteric LCPGs for LC device applications.
Article
Chemistry, Multidisciplinary
Fereshte Damavandi, Joao B. P. Soares
Summary: In this study, we designed and synthesized a thermoresponsive organogelator for oil gelling from oil/water mixtures, which plays a significant role in oil spill remediation. The gelators formed porous fibrillar structures with high stiffness, and the three-dimensional networks were created by hydrogen bonding and van der Waals forces. Poly(styrene-co-10-undecenoic acid) has the advantages of a straightforward synthesis procedure, room-temperature conditions, and easy powder delivery, making it an attractive alternative to existing oil spill response methods.
Article
Chemistry, Multidisciplinary
Gerald Lepcha, Santanu Majumdar, Baishakhi Pal, Kazi Tawsif Ahmed, Indrajit Pal, Biswarup Satpati, Swadesh Ranjan Biswas, Partha Pratim Ray, Biswajit Dey
Summary: The synthesis of three metallogels with suberic acid and nickel, zinc, and cadmium acetate salts has been achieved using N,N'-dimethyl formamide. These metallogels exhibit interesting viscoelastic properties, and the microstructural analysis confirms the presence of hierarchical patterns. Various spectroscopic and microscopic techniques were used to investigate the supramolecular interactions and thermal stability of the metallogels. The metallogels also demonstrate antibacterial efficiency and promising semiconductor performance.
Article
Biochemistry & Molecular Biology
Max J. S. Hill, Ana M. Fuentes-Caparros, Dave J. Adams
Summary: We investigated the effects of spatial constraints on hydrogels formed by dipeptide-based low molecular weight gelators. The gels were formed by either solvent switch or pH change methods in vessels of different sizes to produce gels of different thicknesses. Confocal microscopy and cavitation rheology were used to examine the microstructures and mechanical properties of the gels. Our results show that solvent-switch-triggered gels are sensitive to spatial constraints, while pH-triggered gels are not. These findings are important for applications requiring gels of different thicknesses.
Article
Food Science & Technology
Oni Yuliarti, Esther Gusti, Jie Hong Chiang, Pei Xuan Teo, Jun Yi Ng
Summary: Two native cassava starches were isolated and characterized, showing differences in gelation behavior and physicochemical properties. Addition of low methoxyl pectin and calcium could enhance the gel strength of starch-based fruit filling, as indicated by rheological and mechanical analysis.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ajaykumar M. Patel, Debes Ray, Vinod K. Aswal, Amar Ballabh
Summary: A series of thiazole-urea-aliphatic chain-based compounds were designed and synthesized using Crystal Engineering principles. These compounds showed excellent gelation ability in polar solvents. Physicochemical techniques were employed to investigate the packing of these compounds in solid-state, solution, and gel phases, revealing high sensitivity and selectivity of compound 1 to iodide ions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Felix Leven, Mathias Ulbricht, Johannes Limberg, Rainer Ostermann
Summary: Novel polyolefin aerogels with nanostructured, robust properties were successfully obtained using sorbitol-based organogelators and freeze-drying techniques. The study investigated the impact of different polymer types, molecular weights, and concentrations on structure, mechanical stability, and thermal conductivity, proposing a mechanism for structure formation. Additionally, Soxhlet extraction was shown to optimize the drying process and partially recover the necessary gelator component for the composite aerogels.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
Dave J. Adams
Summary: Low molecular weight gels are formed by the self-assembly of small molecules into anisotropic structures that can immobilize solvents. Despite their common occurrence and wide range of applications, there are significant gaps and challenges in our understanding of these systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Pramod Aryal, Joedian Morris, Surya B. Adhikari, Jonathan Bietsch, Guijun Wang
Summary: In this study, several chemically responsive bola-glycolipids and dimeric carbohydrate- and diarylethene-based photoswitchable derivatives were designed and synthesized. The dimeric glycolipids formed stable gels in various solvent systems. The best performing gelators in this series contained decanedioic and dithienylethene (DTE) spacers, which formed gels in eight and nine of the tested solvents, respectively.
