Versatile supramolecular pH-tolerant hydrogels which demonstrate pH-dependent selective adsorption of dyes from aqueous solution

Okesola, Babatunde O.; Smith, David K.

doi:10.1039/c3cc45969a

Cited by 138 publications

(132 citation statements)

References 24 publications

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“…32 Hydrogels have real potential for environmental application, as the primary solvent in the biosphere is water. 32 Hydrogels have real potential for environmental application, as the primary solvent in the biosphere is water.…”

Section: Environmental Remediationmentioning

confidence: 99%

“…In this case, the hydrogel has initially been studied for the removal of pollutant dyes from water samples. 32 It is clear that modified gel fibres may, in this way, be able to play significant active roles in the removal of a wide range of different pollutants from water at low cost, using a fundamentally simple technology that is already widely applied and considered to be benign. DBS-CONHNH 2 formed gels across a wide pH range, making it stand out amongst other low molecular weight hydrogelators that have demonstrated significant ability in sequestering dyes from water but often require acidic conditions in order for gelation to occur.…”

Section: Environmental Remediationmentioning

confidence: 99%

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1,3:2,4-Dibenzylidene-d-sorbitol (DBS) and its derivatives – efficient, versatile and industrially-relevant low-molecular-weight gelators with over 100 years of history and a bright future

et al. 2015

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Dibenzylidene-D-sorbitol (DBS) has been a well-known low-molecular-weight gelator of organic solvents for over 100 years. As such, it constitutes a very early example of a supramolecular gel--a research field which has recently developed into one of intense interest. The ability of DBS to self-assemble into sample-spanning networks in numerous solvents is predicated upon its 'butterfly-like' structure, whereby the benzylidene groups constitute the 'wings' and the sorbitol backbone the 'body'--the two parts representing the molecular recognition motifs underpinning its gelation mechanism, with the nature of solvent playing a key role in controlling the precise assembly mode. This gelator has found widespread applications in areas as diverse as personal care products and polymer nucleation/clarification, and has considerable potential in applications such as dental composites, energy technology and liquid crystalline materials. Some derivatives of DBS have also been reported which offer the potential to expand the scope and range of applications of this family of gelators and endow the nansocale network with additional functionality. This review aims to explain current trends in DBS research, and provide insight into how by combining a long history of application, with modern methods of derivatisation and analysis, the future for this family of gelators is bright, with an increasing number of high-tech applications, from environmental remediation to tissue engineering, being within reach.

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Section: Environmental Remediationmentioning

confidence: 99%

Section: Environmental Remediationmentioning

confidence: 99%

1,3:2,4-Dibenzylidene-d-sorbitol (DBS) and its derivatives – efficient, versatile and industrially-relevant low-molecular-weight gelators with over 100 years of history and a bright future

et al. 2015

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“…1) were tolerant to a wide pH range (2-11.5) and could adsorb large amounts of pollutant dyes. 24 As such, we became interested in using this gelator for API formulation. For this preliminary study, we selected anti-inflammatory drugs -5-amino-salicylic acid (mesalazine, MSZ), ibuprofen (IBU), and naproxen (NPX) (Fig.…”

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confidence: 99%

Self-assembled sorbitol-derived supramolecular hydrogels for the controlled encapsulation and release of active pharmaceutical ingredients

2015

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“…S14b, ESI †). 36,37 Viscoelastic experiments were conducted on the hydrogels (25 mg mL À1 ) to quantify their stiffness. S14c, ESI †).…”

Section: View Article Onlinementioning

confidence: 99%

Sugar based nanotube assembly for the construction of sonication triggered hydrogel: an application of the entrapment of tetracycline hydrochloride

Zhang

et al. 2015

J. Mater. Chem. B

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A sugar functionalized naphthalimide derivative (H1) self-assembles into supramolecular nanotubes (25 nm pore diameter) by the reaction of 4-N-ethylaminenaphthalimide-N-propinyl and deltagluconolactone in refluxed ethanol. The suspension of the tube assembly in water can directly form hydrogels when triggered by sonication, without change in morphology or molecular aggregates in the pH range of 5-8. Modified with aminocarproic acid, H2 with more hydrogen bonding sites can form pH tolerant hydrogels in the widest range of pH values from 1-14 accelerated by sonication. The gelation mechanism was studied in detail. To the best of our knowledge, this is the first paradigm wherein hydrogels were constructed from naphthalimide derivatives. Finally, the potential of the hydrogel as a drug delivery and release system for hydrophilic medicine was explored.Scheme 1 The chemical structures of H1 and H2, and the illustration of the hydrogel formation process and conditions.

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Versatile supramolecular pH-tolerant hydrogels which demonstrate pH-dependent selective adsorption of dyes from aqueous solution

Cited by 138 publications

References 24 publications

1,3:2,4-Dibenzylidene-d-sorbitol (DBS) and its derivatives – efficient, versatile and industrially-relevant low-molecular-weight gelators with over 100 years of history and a bright future

1,3:2,4-Dibenzylidene-d-sorbitol (DBS) and its derivatives – efficient, versatile and industrially-relevant low-molecular-weight gelators with over 100 years of history and a bright future

Self-assembled sorbitol-derived supramolecular hydrogels for the controlled encapsulation and release of active pharmaceutical ingredients

Sugar based nanotube assembly for the construction of sonication triggered hydrogel: an application of the entrapment of tetracycline hydrochloride

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