Stimuli-responsive supramolecular organogels that exhibit a succession of micro-morphologies

Hou, Yuehui; Xin, Feifei; Yin, Mingjing; Kong, Li; Zhang, Huacheng; Sun, Tao; Xing, Peng; Hao, Aiyou

doi:10.1016/j.colsurfa.2012.08.011

Cited by 8 publications

(6 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Changes in gel structure may also affect properties such as colour, 22 fluorescence, 23 viscosity, 24 conductivity 25 or magnetic susceptibility. 26,27 Furthermore, it is possible for gelator molecules to reassemble into an alternative aggregate, such as another gel, [28][29][30][31][32][33][34] a non-gel micellar phase, [35][36][37] or a precipitate of crystals 38,39 or amorphous solid. 29,35,[40][41][42][43] Supramolecular gels which respond to chemical cues, and their uses as sensors for specific molecules and ions, are the subject of a number of reviews.…”

Section: Introductionmentioning

confidence: 99%

“…113 Notably, the presence of such intact structures in a sol may lead to the development of new aggregates, with the result that cycles of gel formation and destruction cannot be repeated indefinitely. 29,35 Where ready interconversion between gel and sol states is possible, supramolecular materials may be usefully employed as temporary catalyst supports. 114,115 Small-molecule gels have been successfully utilised in the in situ preparation of gold, palladium and platinum nanoparticles for use in a range of liquid-and gas-phase processes.…”

Section: Switchable Gelationmentioning

confidence: 99%

“…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%

See 2 more Smart Citations

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

2016

View full text Add to dashboard Cite

. (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.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Switchable Gelationmentioning

confidence: 99%

Section: Switchable Gelationmentioning

confidence: 99%

See 1 more Smart Citation

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

2016

View full text Add to dashboard Cite

show abstract

“…4,42,43 However, rare reports are also found where an increase in temperature stimulates aggregation. [44][45][46] For example, Kimizuka et al reported a metallogelator based on Co 2+ coordinated-4-alkyl triazole complex that formed a gel upon heating. 47 On lowering the temperature to 0 1C, the blue gel converted to a pink coloured solution, which formed a gel state again by increasing the temperature to room temperature.…”

Section: (I) Thermal Annealing Of Supramolecular Gelsmentioning

confidence: 99%

Stimuli responsive dynamic transformations in supramolecular gels

2021

View full text Add to dashboard Cite

show abstract

“…CD was also tested in the polymerization processes of the extremely hydrophobic dodecyl methacrylate or octadecyl methacrylate to study the role of β cyclodextrine in the nucleation and growth of particle nuclei and transport of those monomer molecules from monomer droplets to the growing latex particles, as far as CD forms inclusion with the guest species, and thus, increases the water solubility of the hydrophobic compounds [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Upon the Delivery Properties of a Polymeric System Based on Poly(2-Hydroxyethyl Methacrylate) Prepared with Protective Colloids

Niţă¹,

Chiriac²,

Nistor³

et al. 2013

JBNB

View full text Add to dashboard Cite

A comparative study related to the preparation of poly(2-hydroxyethyl methacrylate) (pHEMA) through radical polymerization process in the presence of three different protective colloid substances, respectively poly(vinyl alcohol) (PVA), β-cyclodextrin, or poly(aspartic acid) (PAS), is presented. The dependence of the thermal behavior of the polymers as well as their morphological aspect, on the protective colloids used in synthesis was evidenced by polymers characterization. It is also demonstrated that the swelling capacity is dependent on the protective colloid variant present during the pHEMA preparation. This behavior induces as well interdependence on the ability to load bioactive compounds onto the polymeric matrices. The distribution of the indomethacin (INN), as model drug, into the pHEMA network was put into evidence by near infrared chemical imaging (NIR-CI), a non-destructive technique and with its correspondingly statistical analysis.

show abstract

Stimuli-responsive supramolecular organogels that exhibit a succession of micro-morphologies

Cited by 8 publications

References 40 publications

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

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

Stimuli responsive dynamic transformations in supramolecular gels

Upon the Delivery Properties of a Polymeric System Based on Poly(2-Hydroxyethyl Methacrylate) Prepared with Protective Colloids

Contact Info

Product

Resources

About