Controllable transformation from sensitive and reversible heat-set organogel to stable gel induced by sodium acetate

Xin, Feifei; Zhang, Huacheng; Hao, Baoxiang; Sun, Tao; Kong, Li; Li, Yueming; Hou, Yuehui; Li, Shangyang; Zhang, Yu; Hao, Aiyou

doi:10.1016/j.colsurfa.2012.06.008

Cited by 32 publications

(14 citation statements)

References 26 publications

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“…7,8 So far, the small molecule organogels, such as amino acids, hydrocarbons, amides, and cholesterol have been reported. [9][10][11][12][13][14] Recently, two-component supramolecular hydrogels have been widely used due to their numerous functionalized groups and tightly connected threedimensional network structures. [15][16][17][18][19][20][21] For example, Takeshita et al constructed an amphiphilic tris-urea-based supramolecular hydrogel via the self-assembly of small molecules and studied its adsorption properties for the organic dyes.…”

Section: Introductionmentioning

confidence: 99%

A facile preparation method for new two-component supramolecular hydrogels and their performances in adsorption, catalysis, and stimuli-response

et al. 2019

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Section: Introductionmentioning

confidence: 99%

A facile preparation method for new two-component supramolecular hydrogels and their performances in adsorption, catalysis, and stimuli-response

et al. 2019

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“…It is well known that organogels are one class of important soft materials, in which organic solvents are immobilized by gelators [1-6]. Although gels are widely found in polymer systems, there has recently been an increasing interest in low-molecular-mass organic gelators (LMOGs) [7,8].…”

Section: Introductionmentioning

confidence: 99%

Regulation of substituent groups on morphologies and self-assembly of organogels based on some azobenzene imide derivatives

et al. 2013

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In this paper, new azobenzene imide derivatives with different substituent groups were designed and synthesized. Their gelation behaviors in 21 solvents were tested as novel low-molecular-mass organic gelators. It was shown that the alkyl substituent chains and headgroups of azobenzene residues in gelators played a crucial role in the gelation behavior of all compounds in various organic solvents. More alkyl chains in molecular skeletons in present gelators are favorable for the gelation of organic solvents. Scanning electron microscopy and atomic force microscopy observations revealed that the gelator molecules self-assemble into different aggregates, from wrinkle, lamella, and belt to fiber with the change of solvents. Spectral studies indicated that there existed different H-bond formations between amide groups and conformations of methyl chains. The present work may give some insight to the design and character of new organogelators and soft materials with special molecular structures.

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“…In rare cases, however, a thermoreversible gel may be obtained by raising, rather than lowering, the temperature: the gel is "heatset" and dissolves upon cooling. 29,[48][49][50][51][52][53][54][55] Reversible heat-setting is often the result of an entropically-favoured molecular transformation. For example, a metallopolymer reported by de Hatten et al forms a reversible gel at 140 o C due to a ligandexchange reaction, in which the material dissociates into free trioctylphosphine-copper(I) complexes and neutral organic polymers that can more readily aggregate.…”

Section: Switchable Gelationmentioning

confidence: 99%

Gels with sense: supramolecular materials that respond to heat, light and sound

2016

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. (2016) 'Gels with sense : supramolecular materials that respond to heat, light and sound.', Chemical society reviews., 45 (23). pp. 6546-6596. Further information on publisher's website:https://doi.org/10.1039/C6CS00435KPublisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Advances in the field of supramolecular chemistry have made it possible, in many situations, to reliably engineer soft materials to address a specific technological problem. Particularly exciting are "smart" gels that undergo reversible physical changes on exposure to remote, non-invasive environmental stimuli. This review explores the development of gels which are transformed by heat, light and ultrasound, as well as other mechanical inputs, applied voltages and magnetic fields. Focusing on small-molecule gelators, but with reference to organic polymers and metal-organic systems, we examine how the structures of gelator assemblies influence the physical and chemical mechanisms leading to thermo-, photo-and mechano-switchable behaviour. In addition, we evaluate how the unique and versatile properties of smart materials may be exploited in a wide range of applications, including catalysis, crystal growth, ion sensing, drug delivery, data storage and biomaterial replacement.

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Controllable transformation from sensitive and reversible heat-set organogel to stable gel induced by sodium acetate

Cited by 32 publications

References 26 publications

A facile preparation method for new two-component supramolecular hydrogels and their performances in adsorption, catalysis, and stimuli-response

A facile preparation method for new two-component supramolecular hydrogels and their performances in adsorption, catalysis, and stimuli-response

Regulation of substituent groups on morphologies and self-assembly of organogels based on some azobenzene imide derivatives

Gels with sense: supramolecular materials that respond to heat, light and sound

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