Formation of supramolecular hydrogels with controlled microstructures and stability via molecular assembling in a two-component system

Wu, Ji‐Wei; Tang, Li‐Ming; Chen, Kai; Yan, Liang; Li, Fēi; Wang, Yujiang

doi:10.1016/j.jcis.2006.11.015

Cited by 26 publications

(12 citation statements)

References 24 publications

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“…For example, we described the preliminary result of the hydrogel based on the complex formed from para-hydroxy pyridinium salt of 1,2,4,5-benzene tetracarboxylic acid (gelator 1) [29] and investigated the structure-property relation of hydrogels based on pyridinyl amino butanoic acid isomeric compounds [30]. In this paper, the influence of environmental stimulation on the structures and properties of the hydrogels formed from gelator 1 was investigated in detail via multiple techniques, including scanning electron microscopy (SEM), environmental scanning electron microscopy (ESEM), differential scanning calorimetry (DSC) and rheology measurement.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the assembled structure–property correlation of supramolecular hydrogel formed from low-molecular-weight gelator

Wang

Tang

2008

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Investigation on the assembled structure–property correlation of supramolecular hydrogel formed from low-molecular-weight gelator

Wang

Tang

2008

Journal of Colloid and Interface Science

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“…It has been widely reported that hydrogen bonding played an important role in the self-assembly process of organogels [23,24]. At present, in order to further clarify this and investigate the effect of various factors on self-assembly, the FT-IR spectra of all xerogels of both gelator mixtures were measured, as shown in Figure 4.…”

Section: Spectral Investigationmentioning

confidence: 99%

Structure Effect of Diacid/Triacid on Self‐Assembly of Binary Organogels Based on Glutamic Acid Amino Derivative

Dai

Hong

2013

Journal of Nanomaterials

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The gelation behaviors of binary organogels composed of N-(4-aminobenzoyl)-L-glutamic acid diethyl ester with sebacic acid and citric acid in various organic solvents were designed and investigated. Their gelation behaviors in 20 solvents were tested as new binary organic gelators. It showed that the molecular structures and organic solvents have played a crucial role in the gelation behavior of all gelator mixtures. More carboxyl groups in molecular skeletons in the present mixture gelators are unfavorable for the gelation of organic solvents. The mixture containing sebacic acid can form 5 kinds of organogels, while another mixture containing citric acid can only form 3 kinds of organogels in different solvents. Morphological studies revealed that the gelator molecules self-assemble into different aggregates from wrinkle and belt to fiber with change of solvents. Spectral studies indicated that there existed different H-bond formations and hydrophobic forces, depending on solvents and molecular structures. The as-prepared nanomaterials have wide perspectives in nanoscience and functional textile materials with special microstructures.

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“…Wang et al reported that, by changing the molar ratio of two isomeric building units (4-oxo-4-(2-pyridinylamino) butanoic acid ( 1 , Scheme 1) and 4-oxo-4-(3-pyridinylamino) butanoic acid ( 2 ) from 7:1 to 1:3, they have obtained a series of supramolecular hydrogels that mainly rely on hydrogen bonds as the driving forces of self-assembly. 54 Tang et al obtained single crystal of the complex of 1,2,4,5-benzene tetracarboxylic acid (BTCA) and 2-amino-3-hydroxy pyridine and found that hydrogen bonds connect the molecule to form a network. 55 In addition, Tang et al reported that the increase of the concentrations of the gelators (1,3,5-benzenetricarboxylic acid ( 3 ) and 4-hydroxypyridine ( 4 ) results in the corresponding increases of the diameters of the nanofibers, the density of the networks made of the nanofibers, and the amount of water immobilized in the hydrogels.…”

Section: Driving Forcementioning

confidence: 99%

Heterotypic supramolecular hydrogels

Yuan

2016

J. Mater. Chem. B

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Supramolecular hydrogels, formed via intermolecular interactions in water, are emerging as a new type of versatile soft materials to be applied in many areas, such as biomedical applications, catalysis, food additives, and cosmetics. While most of the supramolecular hydrogels are homotypic (i.e., one type of building blocks), heterotypic supramolecular hydrogels are less explored, but may offer unique advantages. This review discribes supramolecular hydrogels that consist of more than one type building blocks (i.e., heterotypic) to illustrate the promises and challenges of heterotypic supramolecular hydrogels as soft biomaterials. First, we discuss the driving force for producing heterotypic supramolecular hydrogels. Second, we introduce the general methods for triggering heterotypic supramolecular hydrogels. Third, we summarize the examples of heterotypic supramolecular hydrogels made of hydrogelators with or without containing amino acid residues. Fourth, we describe the applications of heterotypic supramolecular hydrogels up-to-date. Finally, we give the outlook and propose a few future directions that likely worth to be explored.

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Formation of supramolecular hydrogels with controlled microstructures and stability via molecular assembling in a two-component system

Cited by 26 publications

References 24 publications

Investigation on the assembled structure–property correlation of supramolecular hydrogel formed from low-molecular-weight gelator

Investigation on the assembled structure–property correlation of supramolecular hydrogel formed from low-molecular-weight gelator

Structure Effect of Diacid/Triacid on Self‐Assembly of Binary Organogels Based on Glutamic Acid Amino Derivative

Heterotypic supramolecular hydrogels

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