Carbohydrate Derived Organogelators and the Corresponding Functional Gels Developed in Recent Time

Abstract

Owing to their multifarious applicability, studies of molecular and supramolecular gelators and their corresponding gels have gained momentum, particularly in the last two decades. Hydrophobic-hydrophilic balance, different solvent parameters, gelator-gelator and gelator-solvent interactions, including different noncovalent intermolecular interactive forces like H-bonding, ionic interactions, π-π interactions, van der Waals interactions, etc., cause the supramolecular gel assembly of micro and nano scales with different types of morphologies, depending on the gelator, solvent, and condition of gelation. These gel structures can be utilized for making template inorganic superstructures for potential application in separation, generation of nanocomposite materials, and other applications like self-healing, controlled drug encapsulation, release and delivery, as structuring agents, oil-spill recovery, for preparation of semi-conducting fabrics, and in many other fields. Sugars, being easily available, inexpensive, and nontoxic natural resources with multi functionality and well-defined chirality are attractive starting materials for the preparation of sugar-based gelators. This review will focus on compilation of sugar derived organogelators and the corresponding gels, along with the potential applications that have been

Development of Natural-Drugs-Based Low-Molecular-Weight Supramolecular Gels

“…In addition, due to the essential role of carbohydrate compounds in life activities, the low-molecular-weight supramolecular gels based on carbohydrates have also received great attention [91,92]. For example, Bielejewski et al [93][94][95] used methyl-4,6-O-(p-nitrobenzylidene)-α-D-glucopyranoside as the gelators and prepared a series of supramolecular gels.…”

4,6-O-Phenylethylidene Acetal Protected D-Glucosamine Carbamate-Based Gelators and Their Applications for Multi-Component Gels

“…Low molecular weight gelators (LMWGs) have gained much attention due to their versatile applications in the preparation of novel functional soft materials [ 1 , 2 , 3 , 4 , 5 ]. These materials have demonstrated potential in biomedical applications, pollutant removal, and optoelectronic devices, and for catalysis [ 4 , 6 , 7 , 8 , 9 , 10 , 11 ].…”

“…Various structural features have been carefully analyzed over the years in order to rationally design effective low molecular weight gelators [ 11 , 12 ]. Among the many classes of organic compounds used as the template for gelators, carbohydrates have emerged as interesting molecules for the preparation of these advanced materials due to their natural abundance, biocompatibility, and intrinsic chirality, which opens avenues for their desired modification [ 2 , 3 ]. The driving forces governing the formation of self-assembled networks by LMWGs are non-covalent in nature, such as hydrophobic interactions, hydrogen bonding, π–π, and CH–π interactions.…”

Recent Development of Polysaccharide-Derived Hydrogel: Properties, Stimuli-Responsiveness and Bioapplications

“…Gels are extentisively studied self-organized materials with wide applications in day-to-day usable products of human life, such as toothpaste, soap, hair gel, shampoo, shaving gel, honey etc. 1 Depending on their solvent absorption efficacy; gels could be classified as organogels and controlled particle size are dispersed into pre-polymer solution. Fast gelling, injectable, and porous heparin-based hydrogel was demonstrated with pore interconnectivity by using gelatin microparticles as a porogen.…”